|
(PLATE 22. GEOLOGICAL SECTION NEAR OCOTAL. Section of Strata between Depilto and the hill three miles south-west of Ocotal. Gravel with boulders of trap and conglomerate. Gravel with boulders of gneiss and quartz rock. Contorted schists. Quartz rock and gneiss.)
The evidences of glacial action between Depilto and Ocotal were, with one exception, as clear as in any Welsh or Highland valley. There were the same rounded and smoothed rock surfaces, the same moraine-like accumulations of unstratified sand and gravel, the same transported boulders that could be traced to their parent rocks several miles distant. The single exception was, I am convinced, one of observation and not one of fact, namely, I saw no glacial scratches on the rocks; but geologists know how rare these are on natural exposures in some districts that have certainly been glaciated, and will not be surprised that in a hurried visit of only a few hours I should not have discovered any. Glacial scratches are seldom preserved on rock surfaces exposed to the action of the elements. Even in Nova Scotia, where scratches and grooves are met with wherever the rock surface has been recently laid bare, I do not remember having ever seen any on natural exposures. It is only where protected by a covering of clay or gravel from the action of the elements, that they have been preserved through the ages that have passed since the glacial epoch, and as I did not see any rock surfaces near Depilto that had been recently bared, it is not surprising that, notwithstanding the other proofs of glacial action, I should not have seen any ice scratches or grooves.
I could no longer withstand the evidence that had been gradually accumulating of the presence of large glaciers in Central America during the glacial period, and these, once admitted, afforded me a solution of many phenomena that had before been inexplicable. The immense ridges of boulder clay between San Rafael and Yales, the long hog-backed hills near Tablason, the great transported boulders two leagues beyond Libertad on the Juigalpa road, and the scarcity of alluvial gold in the valleys of Santo Domingo, could all be easily explained on the supposition that the ice of the glacial period was not confined to extra-tropical lands, but in Central America covered all the higher ranges, and descended in great glaciers to at least as low as the line of country now standing at two thousand feet above the sea.
In my description of the mines of Santo Domingo I have only briefly alluded to the scarcity of alluvial gold in the valleys. It may be correlated with a similar scarcity in the glaciated valleys of Nova Scotia and North Wales, in the neighbourhood of auriferous quartz veins, and is probably due to the same cause. Glacier ice scoops out all the contents of the valleys, and in deepening them does not sort the materials like running water or the action of the waves upon the sea coast. I have in another place* (* "The Glacial Period in North America" by Thomas Belt. Published in "Transactions of the Nova Scotian Institute of Natural Science" 1866 page 91.) shown that in Nova Scotia, in the neighbourhood of rich auriferous quartz veins that have been greatly denuded, grain gold is only sparingly disseminated throughout the drifts of the valleys, whilst in Australia every auriferous quartz vein has been the source of an alluvial deposit of grain gold, produced by the denudation and sorting action of running water. When the denuding agent was water, the rocks were worn away, and the heavier gold left behind at the bottom of the alluvial deposits; but when the denuding agent was glacier ice the stony masses and their metallic contents were carried away, or mingled together in the unassorted moraines.
That the transportation of boulders in Nicaragua was due to glaciers, and not to floating icebergs, may be argued on zoological grounds. The transported boulders, near Ocotal, are about three thousand feet above the sea, those near Libertad about two thousand feet. The low pass between the Atlantic and the Pacific oceans, through the valley of the San Juan and the Lake of Nicaragua, is less than two hundred feet above the sea,* (* See ante, Chapter 4.) and to allow for the flotation of icebergs at the lower of the two places named, a channel of more than eighteen hundred feet in depth would have connected the two oceans. This supposition is negatived by the fact that the mollusca on the two coasts, separated by the narrow Isthmus of Darien, are almost entirely distinct, whilst we know that since the glacial period there has been little change in the molluscan fauna, nearly, if not all, the shells found in glacial deposits still existing in neighbouring seas. In the Caribbean province, which includes the Gulf of Mexico, the West Indian Islands, and the eastern coast of South America as far as Rio de Janeiro, the number of marine shells is estimated by Professor C.B. Adams at not less than 1500 species. From the Panamic province, which, on the western coast of America, extends from the Gulf of California to Payta in Peru, there has been catalogued 1341 distinct species of marine molluscs. Out of this immense number of species, less than fifty occur on both sides of the narrow Isthmus of Darien. So remarkably distinct are the two marine faunas, that most zoologists consider that there has been no communication in the tropics between the two seas since the close of the miocene period, whilst the connection that is supposed to have existed at that remote epoch, and to account for the distribution of corals, whilst advocated by Professor Duncan and other eminent men, is disputed by others equally eminent. No zoologist of note believes that there has been a submergence of the land lying between the Pacific and the Atlantic since the pliocene period, and icebergs could not have floated without such submergence, so that, in the cases I have mentioned, the boulders, if ice-borne, have been carried by glaciers and not by floating ice.
Whilst I thus found evidence of the ice of the glacial period reaching, in the northern hemisphere, to within the tropics; in the southern hemisphere Professor Hartt has found glacial drift extending from Patagonia, all through Brazil to Pernambuco, and Agassiz has even announced the discovery of glacial moraines up to the equator. I have myself seen, near Pernambuco, and in the province of Maranham, in Brazil, a great drift deposit that I believe to be of glacial origin; and I think it highly probable that the evidence that is accumulating will force geologists to the conclusion that the ice of the glacial period was not only more extensive than has been generally supposed, but that it existed at the same time in the northern and southern hemispheres, leaving, at least, on the American continent, only the lower lands of the tropics free from the icy covering.
I shall not enter upon the question of the cause of the cold of the glacial period. It is probably closely connected with the cause of an exactly opposite state of things, the heat of the miocene period, when the beech, the hazel, and the plane lived and flourished in Spitzbergen, as far north as latitude 78 degrees, and, according to Heer, firs and poplars reached to the North Pole, if there was then land there for them to grow upon. I consider that the great extension of the ice in the glacial period supports the conclusion of Professor Heer, founded on the northern extension of the miocene flora, that these enormous changes of climate cannot be explained by any rearrangement of the relative positions of land and water, and that "we are face to face with a problem whose solution must be attempted and doubtless completed by the astronomer."* (* I have since discussed this question in the "Quarterly Journal of Science" for October 1874.)
There is another branch of the subject that I cannot so easily leave. It is the answer to the question, What became of the many peculiar tropical American genera of animals and plants, when a great part of the tropics was covered with ice, and the climate of the lower lands much colder than now? For instance, the Heliconii and Morphos are a group of butterflies peculiar to tropical America, containing many distinct genera which, on any theory of descent from a common progenitor, must have originated ages before the glacial period. How is it that such peculiarly tropical groups were not exterminated by the cold of the glacial period, or if able to stand the cold, that they did not spread into temperate regions on the retreat of the ice? I believe the answer is, that there was much extermination during the glacial period, that many species and some genera, as, for instance, the American horse, did not survive it, and that some of the great gaps that now exist in natural history were then made; but that a refuge was found for many species, on lands now below the ocean, that were uncovered by the lowering of the sea caused by the immense quantity of water that was locked up in frozen masses on the land.
Mr. Alfred Tylor considers that the ice cap of the glacial period was the cause of a great reduction of the level of the sea, amounting to at least 600 feet.* (* "Geological Magazine" volume 9 page 392.) But if we admit that the ice existed in both hemispheres at the same time, we shall have to speculate on a lowering of the level of the sea to at least 1000 feet. We have many facts tending to prove that during the extreme extent of the glacial period the land stood much higher relatively to the sea than it now does. Professor Hartt believes that during the time of the drift, Brazil stood at a much higher level than at present,* (* "Geology and Physical Geography of Brazil" by Ch. Fred. Hartt page 573.) and we can, on the supposition of a general lowering of the sea all over the world, account for the distribution of animal life over islands now separated by shallow seas. Thus Mr. Bland, in a paper read before the American Philosophical Society, on "The Geology and Physical Geography of the West Indies, with reference to the distribution of Mollusca," states his opinion that Porto Rico, the Virgins, the Anguilla group, Cuba, the Bahamas, and Hayti, once formed continuous dry land that obtained its land molluscs from Central America and Mexico. The land molluscs of the islands to the south, on the contrary, from Barbuda and St. Kitt's down to Trinidad, are of two types, one Venezuelan, the other Guianian; the western side of the supposed continuous land, namely, Trinidad, Tobago, Grenada, the Grenadines, St. Vincent, and St. Lucia, belonging to the first type; the eastern side, from Barbados to Antigua, to the second.* (* Quoted in "At Last" by Charles Kingsley page 305.)
Commenting on Mr. Bland's valuable communication, Mr. Kingsley justly says: "If this be so, a glance at the map will show the vast destruction of tropic land during almost the very latest geological epoch; and show, too, how little, in the present imperfect state of our knowledge, we ought to dare any speculations as to the absence of man, as well as of other creatures, on those great lands destroyed. For, to supply the dry land which Mr. Bland's theory needs, we shall have to conceive a junction, reaching over at least five degrees of latitude, between the north of British Guiana and Barbados; and may freely indulge in the dream that the waters of the Orinoco, when they ran over the lowlands of Trinidad, passed east of Tobago, then northward between Barbados and St. Lucia, afterwards turning westward between the latter island and Martinique, and that the mighty estuary—for a great part at least of that line—formed the original barrier which kept the land shells of Venezuela apart from those of Guiana."* (* Loc cit page 306.)
A very similar theory has been propounded by Mr. Wallace to account for the distribution of the faunas of the Malay Archipelago, in his admirable work on the natural history of that region.* (* "The Malay Archipelago" volume 1 page 11.) Java, Sumatra, and Borneo are separated from each other, and from the continent of Asia, by a shallow sea less than six hundred feet in depth, and must at one time have been connected by continuous land to allow of the elephant and tapir of Sumatra and Borneo, the rhinoceros of Sumatra and Java, and the wild cattle of Borneo and Java, to spread from the continent to these now sea-surrounded lands, as none of these large animals could have passed over the arms of the sea that now separate them. The smaller mammals, the birds, and insects, all illustrate this view, almost all the genera found in any of the islands occurring also on the Asiatic continent, and the species being often identical. On the other hand, the fauna of islands to the eastward are more closely connected with Australia, and must at one time have been joined to it by nearly continuous land. Honeysuckers and lories take the place of the woodpeckers, barbets, trogons, and fruit thrushes of the western islands, and the many mammals belonging to Asiatic genera are no more seen.
Mr. Wallace ascribes the present isolation of the islands, and their separation from the adjoining continents, to the submergence of the channels between them caused by the abstraction of matter thrown out by the numerous volcanoes. Looking, however, at the fact that at the time when these islands were probably connected with the continents of Asia on the one side and Australasia on the other, namely, at the close of the pliocene period, England was connected with the continent; Malta, as shown by its fossil elephants, with Africa; the West Indies with Yucatan and Venezuela; it seems to me more probable that the cause was not a local one, but a general lowering of the waters of the ocean all over the world to at least one thousand feet, produced by the prodigious quantity of water locked up in the frozen masses that covered a great part of both hemispheres.
The wide diffusion of the Malayan dialects over the Pacific, reaching as far as the Sandwich Islands, shows the great extension of that race in former times. On numerous islands in Polynesia there are cyclopean ruins utterly out of keeping with their present size and population. Who can look at the pictures of little Easter Island, with its gigantic images standing up in unworshipped solitude, without feeling that that insignificant islet could never have supported the race that reared the monuments. But if that and other islands were once hills overlooking peopled lowlands, the sense of incongruity vanishes. We see the images, not gazing gloomily over the ocean that narrowly circles them in, but proudly looking across wide plains peopled by their worshippers, who from their villages and fields behold the gods they adore, and implore their protection and support.
Was the fabled Atlantis really a myth, or was it that great continent in the Atlantic laid bare by the lowering of the ocean, on which the present West Indian Islands were mountains, rising high above the level and fertile plains that are now covered by the sea? Obscurely the accounts of it have come down to us from the dim past, but there is a remarkable coincidence between the traditions that have been handed down on the two sides of the Atlantic.
In a fragment of the works of Theopompus, who lived in the fourth century before the Christian era, is an account of a conversation between Silenus and Midas, the king of Phrygia, in which the former tells the king that Europe, Asia, and Africa were surrounded by the sea, but that beyond them was an island of immense size, in which were many great cities, and nations with laws and customs very different from theirs. Plato, in his "Timaeus and Critias," relates that Solon was told by a priest of Sais, from the sacred inscriptions in the temple, how Solon's country "once opposed a power which with great arrogance pushed its way into Europe and Asia from the Atlantic Ocean. Beyond the entrance which you call the Pillars of Hercules there was an island larger than Libya and Asia together. From it navigation passed to the other islands, and from them to the opposite continent which surrounded that ocean. On this great Atlantic island there was a powerful and singular kingdom, whose dominion extended not only over the whole island, but over many others, and parts of the continent. It ruled also over Libya as far as Egypt, and over Europe as far as Tyrrhenia. This kingdom with the whole of its forces united tried to subjugate in one campaign your country and ours, and all the country within the strait. At that time, O Solon, your nation shone out from all others by bravery and power. It was placed in great danger, but it defeated the attacking army, and erected triumphal monuments. But when at a later period earthquakes and great floods took place, the whole of your united army was swallowed up during one evil day and one evil night, and at the same time the island of Atlantis sank into the sea." Crantor, quoted by Proclus, corroborates the account by Plato, and says that he found this same story retained by the priests of Sais, three hundred years after the period of Solon, and that he was shown the inscriptions on which it was recorded.
Turning to the western side of the Atlantic, we find in the "Teo Amoxtli," as translated by the Abbe Brasseur de Bourburg, an account of the overwhelming of a country by the sea, when thunder and flames came out of it, and "the mountains were sinking and rising." Everywhere throughout America there are traditions of a great catastrophe, in which a whole country was submerged, and only a few people escaped to the mountains; and the Spanish conquerors relate with wonder the accounts they found amongst the Indians of a universal deluge. Amongst the modern Indians the traveller, Catlin, relates that in one hundred and twenty different tribes that he had visited in North, and South, and Central America, "every tribe related, more or less distinctly, their tradition of the deluge, in which one, or three, or eight persons were saved above the waters on the top of a high mountain."* (* "Lifted and Subsided Rocks in America" by G. Catlin page 182.)
If Atlantis were lowlands connecting the West Indian Islands with America, the other islands mentioned by Plato may have been the Azores, also greatly increased in extent by the lowering of the ocean; and the overwhelming of this lowland, on the melting of the ice at the close of the glacial period, may be that great catastrophe that is recorded on both sides of the Atlantic, but is more clearly remembered in the traditions of America, because all the highlands there had been covered with ice, and the inhabitants were restricted to those that were overwhelmed by the deluge.
I approached this subject from the side of Natural History. I was driven to look for a refuge for the animals and plants of tropical America during the glacial period, when I found proofs that the land they now occupy was at that time either covered with ice or too cold for genera that can now only live where frost is unknown. I had arrived at the conclusion that they must have inhabited lowlands now submerged, and following up the question, I soon saw that the very accumulation of ice that made their abode impossible provided another for them by the lowering of the sea. Then pursuing the subject still further, I saw that all over the world curious questions concerning the distribution of races of mankind, of animals, and of plants, were rendered more easy of solution on the theory that land was more continuous once than now; that islands now separated were then joined together, and to adjacent continents; and that what are now banks and shoals beneath the sea were then peopled lowlands.
I have said that during the glacial period, if, as I believe, it was contemporaneous in the two hemispheres, the sea must have stood at least 1000 feet lower than it now does. It may have been much lower than this, but I prefer to err on the safe side. When geologists have mapped out the limits of ancient glacier and continental ice all over the world, it will be possible to calculate the minimum amount of water that was abstracted from the sea; and if by that time hydrographers have shown on their charts the shoals and submerged banks that would be laid dry, fabled Atlantis will rise before our eyes between Europe and America, and in the Pacific the Malay Archipelago will give place to the Malay Continent. Here is a noble inquiry, an unexplored region of research, at the entrance of which I can only stand and point the way for abler and stronger minds; an inquiry that will lead to the knowledge of the lands where dwelt the peoples of the glacial period who lived before the flood.
Vague and visionary as these speculations must seem to many, to others who are acquainted with the enormous glaciation to which America has been subjected they will appear to be based on substantial truths. The immense accumulation of ice over both poles, reaching far down into the temperate zones, in some meridians encroaching on the tropics, and in Equatorial America certainly all the land, lying 2000 feet above the level of the sea, supporting great glaciers, involve conditions which must have greatly drained the sea. Lands now submerged must have been uncovered, and on the return of the waters at the close of the glacial period many a peopled lowland must have been overwhelmed in the nearly universal deluge.
CHAPTER 15.
A Nicaraguan criminal. Geology between Ocotal and Totagalpa. Preparations at Totagalpa for their annual festival. Chicha-drinking. Piety of the Indians. Ancient civilisation of tropical America. Palacaguina. Hospitality of the Mestizos. Curious custom at the festival at Condego. Cross range between Segovia and Matagalpa. Sontuli. Birds' nests.
WE got back to Ocotal, from Depilto, before dark, and made arrangements for setting out on our return to the mines the next morning. Whilst sitting under the corridor, looking across the pretty flower-garden at the glowing western sky, illumined by the last rays of the setting sun, a poor fettered criminal, holding up by means of a string the thick chain that bound together his ankles, came limping along, with a soldier behind him armed with gun and bayonet. He had been brought out of prison to beg. In most of the towns of Nicaragua no food is given to the prisoners, whether convicted or merely charged with crime. Those that have no money to buy food are sent out every day with an armed escort to beg. The prisoner that hobbled up to me was under twenty years of age, and had been convicted of murder and condemned to death. He had appealed against the sentence to a higher court, but I was told that there was scarcely any chance of a decision in his favour, and that he would probably be shot in a day or two. Notwithstanding his critical position, he was lively and cheerful, and when I gave him a small piece of silver was as overjoyed as if he had got news of his reprieve. Jumping away, his clanking fetters making ghastly music, he gleefully showed to his guard the coin that would probably procure him food the few days he had to live. His wretched appearance, impending fate, and shocking levity had chased away the peaceful feelings with which I had watched the quiet sunset; but as he hobbled off, night, like a pall, fell over the scene; the trembling stars peeped out from the vault of heaven, and soon a million distant orbs proclaimed that the world was but a grain of dust in the vast universe, that the things of earth were but for a moment, and, as a shadow, would pass away.
Next morning, when we wished to settle up with our kind entertainers, they absolutely refused to accept any payment. We had been recommended to the house, and told that we could pay for what we got; but we now learnt that no one was ever refused entertainment, and that no charge was made. We were total strangers, nor should I have any opportunity of returning their hospitality, as I had determined shortly to return to Europe; but all I could prevail upon them to accept was a present to a little girl that lived with the ladies, and of whom they were very fond, calling her "the daughter of the house." Leaving the hospitable Senoras Rimirez with many thanks, we started on our return journey about seven o'clock.
After crossing the river, I noticed boulders of conglomerate in the drift, none of which had occurred in the valley of Depilto. The bed rock was still contorted schists, with many quartz veins. At the top of a steep rise, beyond the river, is a small plateau, or level terrace, fringing the range, formed of a gravelly boulder deposit; then another steep ascent led us to a second higher plateau, like the first, covered with boulders, lying on the level surface. The first beds of the quartz-conglomerate occurred about half-way between Ocotal and Totagalpa. Between it and the contorted schists we passed over some soft, decomposing trap-rocks, which, both here and elsewhere, appeared to intervene between these two formations. Over the whole country between Ocotal and Totagalpa were spread many large boulders, great blocks of conglomerate, and of a hard blue trap-rock that I did not see in situ, lying on the upturned edges of the schistose rocks. I should have liked to have worked out the exact relative positions of the quartz-conglomerate and the contorted schists, for I have no doubt that a day or two's search amongst the ravines would have shown many natural sections that would have thrown great light upon the subject; but I had no time to devote to it. We were hurrying on every day as far as our mules could carry us, as it was important that I should get back to the mines before the end of the month, and I was only able to note down the exposures that occurred within sight of the road. These, however, were sufficient to show me that the gneiss of Depilto was overlain conformably by the contorted schists; that the latter were followed by soft trappean beds, and these by thick beds of quartz-conglomerate, apparently derived from the degradation of the schistose rocks, with their numerous quartz veins.
We reached Totagalpa about eleven o'clock, and remained there some time engaging labourers. We stayed at the house of a man who made the common palm-leaf hats, worn throughout the central provinces by both men and women. The palm-leaves are first boiled, then bleached in the sun, split into small strips, and platted together like straw. It was Sunday, and most of the people were in town, sitting at the doors of their huts, or under their verandahs. Nearly all the inhabitants of Totagalpa are pure Indians, and are simple and inoffensive people. They sat listening to three men, one with a whistle, the others with drums, each striving to make as much noise as possible, without any attempt at harmony or tune, whilst an enthusiast in discord kept clanging away at the bells of the church.
They had no padre of their own, but one occasionally came over from Somoti, four leagues distant, to celebrate services or visit the sick. The next day was the great feast of Totagalpa, and they were preparing for it. As we sat under a verandah opposite the church, a procession of the town authorities issued from it, bearing a table and all the silver and brass ornaments. The principal officials each carried his stick of office, but none, excepting the Alcalde, could boast a pair of shoes. Their looks of importance and gravity showed, however, that they considered themselves the chief actors in an important ceremony. The procession slowly traversed half the round of the plaza, whilst the bells clanged, the whistle squeaked, and the drummers thumped their loudest. Stopping at a house at the corner of the plaza, the officials seated themselves on a bench outside. Then was brought out to them in bowls, nearly as large as wash-hand basins, the old Indian drink, "chicha," made from fermented corn and sugar. Each man had one of the great bowls and a napkin; the latter they spread over their knees, and rested the bowl on it, taking long sips every now and then with evident signs of satisfaction. Little have these people changed from the times of the Conquest. Pascual de Andagoya, writing of the people of Nicaragua when they were first subjugated by Hernandez de Cordova, in 1520, says, "The whole happiness of the people consists in drinking the wine they make from maize, which is like beer, and on this they get as drunk as if it was the wine of Spain; and all the festivals they hold are for the purpose of drinking."* (* Hakluyt Society. "Narrative of Pascual de Andagoya" Translated by C.R. Markham page 34.)
The cross, candlesticks, and other ornaments were arranged on a table, and were each carefully and solemnly washed with hot water. This they do every year the day before their feast, and it makes the occasion for the procession and chicha-drinking. Most of the men of the township were gathered around, and in all the straight coarse black hair and Indian features were unmistakable. The chicha-drinking was too long a business for our patience, and we went over to the church, where we found a number of the Indian women with great baskets full of most beautiful and sweet-smelling flowers, making garlands and bouquets to decorate the holy images and church. The beautiful flowers were twined in wreaths, or stuck on prepared stands and shapes, and their fragrance filled the church. The love of flowers is another beautiful trait of the old Indians that their descendants have not lost. The ancient Mexicans decorated their altars and temples with flowers, and in their festivals crowned themselves with garlands.
I mentioned the glistening white tower of the church in the account of our journey out. I now learnt that it was only finished the year before our visit, and had cost these poor people over 700 dollars in money, besides gifts of stone, wood, and labour amounting to more than as much again. At other Mestizo towns, where the churches were like dilapidated barns, we heard much of the religious fervour of the Indians of Totagalpa. At one time, when building the tower, both their funds and the lime were exhausted. In this strait the Alcalde called the people of the town together, and told them that the tower, on the building of which they had already spent so much, could not be finished without lime. Then and there they determined themselves to carry the limestone from the quarries, near Ocotal, ten miles distant. Next morning, before daylight, the whole village set out, and at night a long line of men, women, and children came staggering back into Totagalpa, every one with a block of limestone; and so zealous were they to bring as large stones as they could carry, that some of them had great sores worn between their shoulders where they carried their loads, slung, Indian fashion, from their foreheads. Here survives the same old Indian spirit, only turned in another direction, that impelled their forefathers, with great labour and patience, to bring from a distance and pile up great cairns of stones over the graves of their chieftains.
This care of their church is quite spontaneous on their part, as they have no padre; indeed, from my experience of the priests in other towns, I think it likely that if they had one, he would intercept most of the offerings expended on the church and images. There are exceptions, but generally the padres of Central America are rapacious and immoral. They are much now as they were in Thomas Gage's time, more than two hundred years ago, and the poor Indians are just as humble and respectful to them. In his quaint book, "A New Survey of the West Indies", he says: "Above all, to their priest they are very respectful; and when they come to speak to him put on their best clothes and study their words and compliments to please him. They yielded to the popish religion, especially to the worshipping of saints' images, because they look upon them as much like their forefathers' idols. Out of the smallest of their means they will be sure to buy some of these saints, and bring them to the church that they may stand and be worshipped by them and others. The churches are full of them, and they are placed upon stands, gilded and painted, to be carried in procession on their proper day. And hence comes no small profit to the priests; for on such saints' days the owner of the saint makes a great feast in the town, and presents the priest sometimes two or three, sometimes four or five crowns for his mass and sermon, besides a turkey and three or four fowls, with as much cacao as will make him chocolate for all the octave or eight days following. The priest, therefore, is very watchful over these saints' days, and sends warning beforehand to the Indians of the day of their saint. If they contribute not bountifully, then the priest will chide and threaten that he will not preach."* (* Loc cit pages 332-334.)
When we left Totagalpa, they were still drinking "chicha;" and I shall not forget the solemn satisfied look of the shoeless corporation, as they sipped their drink in sight of their townspeople, now and then singling out some friend, to whom they signed to come and quaff at the big bowl. The warm drink had loosened the tongue of the solemn alcalde. He came, and with many compliments, wished us a good journey. He, good man, had reached the summit of his ambition—he was the chief of his native town; he wore shoes; and what more could he hope for or desire?
The central government interferes but little with the local officials; and the small towns in the interior are almost self-governed. Neither do they pay any direct taxes, the only contributions to the national exchequer being fees for killing cattle, selling land or houses, and making agreements, and a government monopoly in the sale of tobacco and spirits. So the country folks lead an easy life, excepting in times of revolution, when they are pressed into the army. The Indian townships are better managed than those of the Spaniards and Mestizos; the plazas are kept freer from weeds, and the roads in good order. Probably nowhere but in tropical America can it be said that the introduction of European civilisation has caused a retrogression; and that those communities are the happiest and the best-governed who retain most of their old customs and habits. Yet there it is so. The civilisation that Cortez overthrew was more suitable for the Indians than that which has supplanted it. Who can read the accounts of the populous towns of Mexico and Central America in the time of Montezuma, with their magnificent buildings and squares; their gardens both zoological and botanical; their markets, attended by merchants from the surrounding countries; their beautiful cloth and feather work, the latter now a lost art; their picture writing; their cunning artificers in gold and silver; their astronomical knowledge; their schools; their love of order, of cleanliness, of decency; their morality and wonderful patriotism, without feeling that the conquest of Mexico was a deplorable calamity; that if that ancient civilisation had been saved it might have been Christianised and purified without being destroyed, and to-day have stood one of the wonders and delights of the world. Its civilisation was self-grown, it was indigenous, it was unique: a few poor remnants of its piety, love of order, and self-government still remain in remote Indian townships; but its learning, magnificence, and glory have gone for ever.
On leaving Totagalpa, we took the road for Yalaguina. About a mile from the first-named town, the contorted schists cropped up again, and were followed, as before, by beds of soft decomposing trap, and these again by thick beds of quartz-conglomerate. This succession was repeated two or three times during the day's journey. The trap beds formed, by decomposition, a dark fertile soil. Wherever maize was planted on it, it was thriving greatly. We reached Yalaguina about two o'clock, and pushed on for Palacaguina, four leagues further on, passing for a considerable part of the road along the banks of a small stream, by the side of which were some large and fine fields of maize and beans.
We reached Palacaguina an hour before dark, and on asking for lodging for the night, were directed to a small poor-looking house. The front door of this was closed when we rode up, but was opened with haste, and about a dozen young men rushed out, who, it turned out afterwards, had been gambling, and hence the closed doors. We were asked to alight; one man took the gun; others offered to take our hats, to unload the pack-mule, etc. Two or three of them were Zambeses, and not very good-looking; they made themselves so officious, that Velasquez confessed to me afterwards that he was rather afraid of them, and thought they were too pressing in their attentions, and meant to rob us. Our fears were groundless; they had been suddenly startled in the midst of an illegal game, and were glad to find that we were not government officers pouncing upon them. The house itself was dirty and small, with one hammock and one chair for its furniture; we should have fared badly if one of the men, Don Trinidad Soso, had not recollected having once seen Velasquez before, and on the strength of that considered himself bound to take our entertainment into his own hands. He was the nephew of the padre, who was absent, and he invited us to his uncle's house, where we were soon installed, and found much more comfortable quarters. The padre had a good-looking housekeeper, who was also an excellent cook; and she got us ready a supper of venison, tortillas, eggs, and chocolate, to which we did not fail to do justice. Then the padre's bedstead was placed at my disposal, so that altogether we had been most fortunate in meeting with our good friend Don Trinidad.
Most of the people living at Palacaguina were half-breeds with a large infusion of Negro blood; and the weed-covered streets and plaza and dilapidated church compared unfavourably with the not far distant Indian town of Totagalpa. The Mestizos are a thriftless, careless people, but I care not here to dilate on their shortcomings. Let only the hospitality and kindness I experienced in Palacaguina live in my mind, and let regret draw a veil over their failings, and censure forget to chide.
Next morning Don Trinidad went himself to get us milk for our chocolate, three or four others assisted us as kindly on our departure as they had welcomed us on our arrival, and we rode away with more pleasant recollections of the weedy-looking town than if we had been entertained by grandees; for these people were poor, and had assisted us out of pure good-nature. The country at first was level, and the roads smooth and dry. The morning was delightfully cool; and as we trotted along our spirits were high and gay, and snatches of song sprang unbidden to our lips. How delightful these rides in the early morning were! how all nature seemed to be in accord with our feelings! Every bush and tree was noted, every bird-call heard. We would shout to one another, "Do you see this or that?" or set Rito off into convulsions with some thin joke. Every sense was gratified; it was like the youth of life. But as the day wore on, the sun would shine hotter and hotter, what had been a pleasure became a toil, and we would push on determinedly but silently. The day would age, and our shadows come again and begin to lengthen; the heat of the day was past, but our spirits would not mount to their morning's height. The beautiful flowers, the curious thorny bushes, the gorgeous butterflies, and many-coloured birds were all there; but our attention could only be called unwillingly to them. Our jaded animals trudged on with mechanical steps, and, tired ourselves, we thought of nothing but getting to the end of our day's journey, and resting our weary frames.
We did not return from Palacaguina by the road we had come, but took one much more to the westward. This we did, not only to see a fresh line of country, but to gratify Rito with a visit to his relations, whom he had not seen for two years. Two miles beyond Palacaguina, we crossed a river, beyond which I saw no more of the quartz-conglomerate that I have so often mentioned whilst passing through Segovia. From this place to the mines the rocks were soft decomposing dolerites, with many harder bands of felsite, and, occasionally, plains composed of more recent trachytic lavas.
We passed through another weedy, dilapidated town, called Condego, where they have a singular custom at their annual festival held on the 15th of May. For some weeks before this date, they catch all the wild beasts and birds they can, and keep them alive. During the night preceding the feast-day they plant the plaza in front of the church with full-grown plants of maize, rice, beans, and all the other vegetables that they cultivate; and amongst them they fasten the wild beasts and birds that have been collected; so that the sun that set on a bare, weedy plaza rises on one full of vegetable and animal life. The year before, a young jaguar that had been caught was the great attraction. It has now grown so large, that they are afraid of it, and do not know what to do with it. It is kept in an empty house at Pueblo Nuevo, along with a dog, to which it is greatly attached, although it is the one that caught it when young. The custom of planting the square with vegetables, and bringing together all the wild animals that can be collected, is doubtless an Indian one. The ancient Nicaraguans are said to have worshipped maize and beans, but the service may not have had more significance than our own harvest feasts.
We reached the edge of the savannahs of the plain of Segovia and began to ascend the high ranges that divide it from the province of Matagalpa, and soon entered a mountainous country. Our course at first lay up the banks of a torrent that had cut deeply into beds of boulder clay filled with great stones. The lower part of the range was covered with trees of various kinds, but none of them growing to a great height; higher up we reached the sighing pine trees, and higher still, the hills were covered with grass, and supported herds of cattle. About noon, we arrived at a poor-looking hacienda near the top of the range. The proprietor owned about two hundred cattle, and lived in a house, mud-walled and grass-thatched, consisting of one room and a kitchen. Round the sides of the room were crowded eight rude bedsteads, and hammocks were slung across the centre. A mob of twenty-one men, women, and children lived at the house, and must have herded together like cattle at night. There were a great number of half-clothed and naked children running about. The women, of whom there were six, made us some chocolate and tortillas ready, and we rested awhile. Before we left, the men came in with the milking cows and calves. There were two men on horseback, but as the country was too rough for riding fast, they were accompanied by three boys on foot, who were sweating profusely with running after the cattle. The calves were separated from the cows and fastened up. The cows would keep near the corral until the next morning, when they would be milked, and the calves turned out with them again.
We continued to ascend for a mile further, and then reached the top of the range, which was bare of trees and covered with sedgy grass. Heavy rain came on, with tremendous gusts of wind, and as the path lay along the very crest of the mountain range, we were exposed to all the fury of the storm. In some places the cargo mule was nearly blown down the steep slope, and the one I was riding had to stop sometimes to keep its feet. The wind was bleak, and we were drenched with rain, and very cold. Fortunately the storm of rain did not last for more than half-an-hour, but the high cold wind continued all the time we were on the ridge, which was several miles long, with steep slopes on either side. We were glad when we got to a more sheltered spot, where some mountain oak trees protected us from the wind, and at four o'clock, reaching a small scattered settlement called Sontuli, we determined, although early in the day, to stay there, as it was Rito's birthplace, and his only sister, whom he had not seen for two years, lived there. All the hamlet were Rito's friends, and he had soon a crowd about him talking and laughing.
None of the lands around were enclosed—all seemed to be common property; and every family had a few cows and two or three brood mares. A little maize was grown, but the climate was rather too bleak and wet for it. We were now close to the boundary of the province of Matagalpa, and began again to hear of the drought that had destroyed most of the maize crop in that province, although in Chontales, on one side of it, we had had rather more rain than usual, and in Segovia, on the other, we had seen that the crops were excellent. Probably the high ranges that bound Matagalpa on every side had intercepted the rains and drained the winds of their moisture.
Having made such an early halt, we intended to have made up for it by an equally early start the next morning, but were detained by our mules having strayed during the night, and it was seven o'clock before they could be found. We had a long day's journey before us, during which we should not be able to buy any provisions, so, over night, Rito's sister had cooked a fowl for us to take with us. She had married one of the settlers of Sontuli, and, although still young and fresh-looking, had already three lusty children. The great number of children at all the houses had surprised me greatly, as I had been told that the country was decreasing in population. This, I have no doubt, is a mistake, and the inhabitants, if the country should remain at peace, would multiply rapidly.
On leaving Sontuli, the road led over mountain pastures and through woods of the evergreen oak draped from top to bottom with the grey moss-like Tillandsia, which hung in long festoons from every branch, and was wound around the trunks, like garlands, by the wind: the larger masses, waving in the breeze, hung down for four or five feet below the branches. The small birds build in them, and they form excellent hiding-places for their nests, where they are tolerably secure from the attacks of their numerous enemies. I had often, when in the tropics, to notice the great sagacity or instinct of the small birds in choosing places for their nests. So many animals—monkeys, wild-cats, raccoons, opossums, and tree-rats—are constantly prowling about, looking out for eggs and young birds, that, unless placed with great care, their progeny would almost certainly be destroyed. The different species of Oropendula or Orioles (Icteridae) of tropical America choose high, smooth-barked trees, standing apart from others, from which to hang their pendulous nests. Monkeys cannot get at them from the tops of other trees, and any predatory mammal attempting to ascend the smooth trunks would be greatly exposed to the attacks of the birds, armed, as they are, with strong sharp-pointed beaks. Several other birds in the forest suspend their nests from the small but tough air roots that hang down from the epiphytes growing on the branches, where they often look like a natural bunch of moss growing on them. The various prickly bushes are much chosen, especially the bull's-horn thorn, which I have already described. Many birds hang their nests from the extremities of the branches, and a safer place could hardly be chosen, as with the sharp thorns and the stinging ants that inhabit them no mammal would, I think, dare to attempt the ascent of the tree. Stinging ants are not the only insects whose assistance birds secure by building near their nests. A small parrot builds constantly on the plains in a hole made in the nests of the termites, and a species of fly-catcher makes its nest alongside of that of one of the wasps. On the savannahs, between Acoyapo and Nancital, there is a shrub with sharp curved prickles, called Viena paraca (come here) by the Spaniards, because it is difficult to extricate oneself from its hold when the dress is caught, for as one part is cleared another will be entangled. A yellow and brown flycatcher builds its nest in these bushes, and generally places it alongside that of a banded wasp, so that with the prickles and the wasps it is well guarded. I witnessed, however, the death of one of the birds from the very means it had chosen for the protection of its young. Darting hurriedly out of its domed nest as we were passing, it was caught just under its bill by one of the curved hook-like thorns, and in trying to extricate itself got further entangled. Its fluttering disturbed the wasps, who flew down upon it, and in less than a minute stung it to death. We tried in vain to rescue it, for the wasps attacked us also, and one of our party was severely stung by them. We had to leave it hanging up dead in front of its nest, whilst its mate flew round and round screaming out its terror and distress. I find that other travellers have noted the fact of birds building their nests near colonies of wasps for protection. Thus, according to Gosse, the grassquit of Jamaica (Spermophila olivacea) often selects a shrub on which wasps have built, and fixes the entrance to its domed nest close to their cells. Prince Maximilian Neuwied states in his "Travels in Brazil", that he found the curious purse-shaped nest of one of the Todies constantly placed near the nests of wasps, and that the natives informed him that it did so to secure itself from the attacks of its enemies. I should have thought that when building their nests they would be very liable to be attacked by the wasps. The nests placed in these positions appear always to be domed, probably for security against their unstable friends.
CHAPTER 16.
Concordia. Jinotega. Indian habits retained by the people. Indian names of towns. Security of travellers in Nicaragua. Native flour-mill. Uncomfortable lodgings. Tierrabona. Dust whirlwind. Initial form of a cyclone. The origin of cyclones.
SOME of the ranges were very craggy, and one was so steep and rocky that we had to dismount and lead our mules, and even then one of them fell several times. These craggy ranges were covered with the evergreen oaks, and we saw but few pine trees. Now and then we passed over the tracks of the leaf-cutting ants, who were hurrying along as usual, laden with pieces of foliage about the size of a sixpence. There were but few birds, and insects also were scarce, the bleak wet weather doubtless being unsuitable for them.
We now began to descend on the Matagalpa side of the elevated ranges we had been travelling over, and crossed many small valleys and streams, the latter everywhere cutting through boulder clay, with very few exposures of the bed-rock. In the lower lands were many patches cultivated with maize and beans, but the country was very sparsely inhabited. At noon, we reached a small town called Concordia, where the houses were larger and better built than those in the small towns of Segovia. The church, on the other hand, was an ugly barn-like building, apparently much neglected. The rocks were trachytes, and the soil seemed fertile, but there was very little of it cultivated. Many of the men we met wore long swords instead of the usual machetes. There is a school for learning fencing at Concordia, and the people of the district are celebrated for being expert swordsmen. They have often fencing matches. The best man is called the champion, and he is bound to try conclusions with every one that challenges him.
After leaving Concordia we had only one more range to cross, then began to descend towards the plains below Jinotega, and about dusk reached that town and were kindly received by our former entertainers. Doubtless much European blood runs in the veins of the inhabitants of Jinotega, but in their whole manner of living they follow the Indian ways, and it is the same throughout Nicaragua, excepting amongst the higher classes in the large towns. All their cooking vessels are Indian. Just as in the Indian huts, every pot or pan is of coarse pottery, and each dish is cooked on a separate little fire. The drinks in common use are Indian, and have Indian names; tiste, pinul, pinullo, and chicha, all made from maize, sugar, and chocolate. As before observed, whatever was new to the Spaniards when they invaded the country retained its Indian name. It is so with every stage of growth of the maize plant, chilote, elote, and maizorca. The stone for grinding the maize is exactly the same as those found in the old Indian graves, and it is still called the metlate. All the towns we passed through in Segovia retained their Indian names, though their present inhabitants know nothing of their meaning. The old names of many of the towns are probably remnants of a language earlier than that of the inhabitants at the time of the conquest, and their study might throw some light on the distribution of the ancient peoples. Unfortunately the names of places are very incorrectly given in the best maps of Central America, every traveller having spelt them phonetically according to the orthography of his own language. Throughout this book I have spelt proper names in accordance with the pronunciation of the Spanish letters.
Many of the names of towns in Nicaragua and Honduras end in "galpa," as Muyogalpa, Juigalpa, Totagalpa, and Matagalpa. Places apparently of less consequence in Segovia often end in the termination "lee" strongly accented, as Jamaily, Esterly, Daraily, etc., and in "guina," pronounced "weena," as in Palacaguina and Yalaguina. In Chontales many end in "apa," or "apo," as Cuapo, Comoapa, Comelapa, Acoyapo, and others.
The Spaniards, whenever they gave a name to a town, either named it after some city in Spain or after their Saints. There are dozens of Santa Rosas, San Juans, and San Tomases. Even some of the towns, which have well-known Indian names, are called officially after some Spanish saint, but the common people stick to the old names, and they are not to be thrust aside.
We had a long talk with our courteous host of the estanco at Jinotega. He had a small library of books, nearly all being missals and prayer-books. He had a little knowledge of geography and was wishful to learn about Europe, and at the same time most desirous that we should not think that he, one of the chief men of the town, did not know all about it. That England was a small island he admitted was new to him, as he thought it was part of the United States or at least joined to them. He asked if it was true that Rome was one of the four quarters of the globe. We explained that it was only a large city, to which he replied gravely that he knew it was so, but wished to have our opinion to confirm his own.
No newspapers come to Jinotega, excepting occasionally a government gazette, and only a few of the grown-up people are able to read. News travel quickly from one town to another, but every incident is greatly exaggerated; and many extravagant stories are set afloat with no other foundation than the inventive faculties of some idle brain. To appreciate what an immense aid a newspaper press is to the dissemination of truth one must travel in some such country as Nicaragua where newspapers do not circulate. It is impossible to get trustworthy intelligence about any event that has happened a hundred miles away, and stories of murders and robberies that were never committed are widely circulated amongst the credulous people. As far as my experience goes highway robbery is unknown in Nicaragua. Foreigners entrusted with money have stated they have been robbed, but there has always been suspicions that they themselves embezzled the money that they said they lost. Personally I never carried arms for defence in the country, and was never molested nor even insulted, though I often travelled alone. The only dangerous characters in the country are the lower class of foreigners, and these are not numerous. Petty thefts are common enough, and at the mines we found that none of the labouring class were to be trusted; but robberies of a daring character or accompanied by violence were never committed by the natives to my knowledge.
In their drinking bouts they often quarrel among themselves, and slash about with their long heavy knives, inflicting ugly gashes and often maiming each other for life. One-armed men are not uncommon; and I knew of two cases where an arm was chopped off in these encounters. Nearly every pay-week our medical officer was sent for to sew up the wounds that had been received. Fortunately even at these times they do not interfere with foreigners, their quarrels being amongst themselves, and either faction fights or about their women, or gambling losses. Many of the worst cases of cutting with knives were by the Honduraneans employed at the mines, who generally got off through the mountains to their own country. One who was taken managed to escape by inducing the soldiers who had him in charge to take him up to the mines to bring out his tools. He went in at the level whilst they guarded the entrance. Hour after hour passed without his returning, and at last they learnt that he had got through some old workings to another opening into the mine and had started for Honduras. Once in the bush pursuit is hopeless, as the undergrowth is so dense that it is impossible to follow by sight.
We left Jinotega at seven in the morning, passed over the pine-clad ranges again, and at one o'clock came in sight of the town of Matagalpa. At the river a mill was at work grinding wheat. I went into the shed that covered it and found it to be simple and ingenious. Below the floor was a small horizontal water-wheel driven by the stream striking against the inclined floats. The shaft of the wheel passed up through the floor and the lower stone, and was fixed to the upper one, which turned round with it without any gearing. The flour made is dark and full of impurities, as no care is taken to keep it clean.
We found the mules and horses we had left at Matagalpa in good condition, and after getting some dinner started again, taking the road towards Teustepe instead of that by which we had come, as we were told we should avoid the swamps by so doing, for more to the westward they had had no rain. We rode down the valley below the town and found it very dry and barren, the only industry worth naming being a small indigo plantation. Indigo seems to have been more cultivated formerly than now. In many parts I saw the deserted vats in which the plants were steeped to extract the dye. We ascended a high range to the left of the valley, on the top of which were a few pine trees. These we were told were the last we should see on the road to Chontales. On the other side of the range the descent was very steep, and the road was carried down the precipitous and rocky slope in a series of zigzags, so that we saw the mules a few score yards in advance directly under our feet.
From the hill we had seen a house in the valley, and as night was setting in we sought for it, but the whole district was so covered with low scrubby trees with many paths running in various directions that it was long before we found it. When at last we discovered it, the prospect before us of a night's lodging was so discouraging that had it not then been getting quite dark, and being told that we should have to travel several miles before coming to another house, we should have sought for other shelter. The small hut was as usual filled with men, women, and children. Two of the women were lying ill, and one seemed to be dying. There was no room for us in the hut if we had been willing to enter it. We slung our hammocks under a small open-sided shed near by and passed a miserable night. A strong cold wind was blowing, and the swinging of the hammocks caused by it kept a number of dogs continually barking and snapping at our hammocks and boots. We rose cold and cramped at daylight, and without waiting to make ready any coffee, saddled our beasts and rode away.
A little maize was grown about this place, and the people told us that sugar thrived, but the plantations of it were small and ill-kept, and everything had a look of poverty and decadence. They said that twenty years ago there was no bush growing around their house. The country was then open grassed savannahs, and there was less fever. Now the bush grows up to their very doors, and they will not take the trouble to cut it down even to save themselves from the attacks of fever. Here as everywhere throughout the central provinces, deep ingrained indolence paralyses all industry or enterprise, and with the means of plenty and comfort on every side, the people live in squalid poverty.
For four leagues we rode over high ranges with very fine valleys separating them, containing many thatched houses and fields of maize, sugar, and beans. Where not now cultivated the sides of the ranges were covered with weedy-looking shrubs and low trees, proving that all the land had at one time been cropped, and this was further shown by the old lines of pinuela fences and ditches that were seen here and there amongst the brushwood. As we got further south the alluvial flats in the valleys increased in size and fertility, and the cultivated fields were enclosed with permanent fences. On some of the ranges we crossed, the rocks were amygdaloidal, containing nests of a white zeolite, the fractured planes of which glittered like gems on the pathway.
Eight leagues from Matagalpa we reached the small town of Tierrabona, where, as the name implies, the land is very good. Every house had an enclosure around it, planted with maize and beans: and though it was evident that the land was cropped year after year, it still seemed to bear well. We stopped at a small brook just outside the town, and ate some provisions we had brought from Matagalpa. Some speckled tiger-beetles ran about the dusty road, and on wet muddy places near the stream groups of butterflies collected to suck the moisture. Amongst them were some fine swallow-tails (Papilio), quivering their wings as they drank, and lovely blue hair-streaks (Theclae). The latter, when they alight, rub their wings together, moving their curious tail-like appendages up and down. Great dragon-flies hawked after flies; while on the surface of still pools "whirligigs" (Gyrinidae) wheeled about in mazy gyrations, just as they are seen to do at home.
Savannahs, sparingly timbered, were next crossed; then we reached one of those level plains, with black soil and blocks of porous trachyte lying on the surface, which are swamps in the rainy season, and have for vegetation sedgy grasses and scattered jicara trees, cactuses and thorny acacias. Up to the time we passed, there had been no rain in these parts, and the plain was dry and bare, with great cracks in the black soil. The grass had not sprung up, not a breath of air was stirring, and the heated air quivered over the parched ground, forming in the distance an imperfect mirage.
Directly overhead the noonday sun hung hot in the hazy sky. As we moodily toiled over the plain, my attention was arrested by a dust whirlwind that suddenly sprang up about fifty yards to our left. The few dry leaves on the ground began to whirl round and round, and to ascend. In a minute a spiral column was formed, reaching, perhaps, to the height of fifty feet, consisting of dust and dry dead leaves, all whirling round with the greatest rapidity. The column was only a few yards in diameter. It moved slowly along, nearly parallel with our course, but only lasting a few minutes. Before I could point it out to Velasquez, who had ridden on ahead, it had dissolved away. I had been very familiar with these air eddies in Australia, and had hoped to carry on some investigations concerning them, begun there, in Central America; but, though common on the plains of Mexico and of South America, this was the only one I witnessed in Central America.
The interest with which I regarded these miniature storms was due to the assistance that their study was likely to give in the discussion of the cause of all circular movements of the atmosphere, including the dreaded typhoon and cyclone. The chief meteorologists who have discussed this difficult question have approached it from the side of the larger hurricanes. There is a complete gradation from the little dust eddies up through larger whirlwinds and tornadoes to the awful typhoons and cyclones of China and the West Indies; and it has long been my opinion that if meteorologists devoted their attention to the smaller eddies that can be looked at from the outside, and their commencement, continuance, and completion watched and chronicled, they could not fail to obtain a large amount of information to guide them in the study of cyclonic movements of the atmosphere.
Unless the smaller whirlwinds are quite distinct from the larger ones in their origin, the theories advanced by meteorologists to account for the latter are certainly untenable. According to the celebrated M. Dove, cyclones owe their origin to the intrusion of the upper counter trade-wind into the lower trade-wind current.* (* "Law of Storms" page 246.) More lately, Professor T.B. Maury has stated that "the origin of cyclones is found in the tendency of the south-east trade-winds to invade the territory of the north-east trades by sweeping over the equator into our hemisphere, the lateral conflict of the currents giving an initial impulse to bodies of air by which they begin to rotate." Cyclones having thus originated, Professor Maury considers that they are continued and intensified by the vapour condensed in their vortex forming a vacuum.* (* "Quarterly Journal of Science" 1872 page 418.)
Humboldt had long ago ascribed whirlwinds to the meeting of opposing currents of air.* (* "Aspects of Nature" volume 1 page 17. ) There is this dynamical objection to the theory. The movements of the air in whirlwinds are much more rapid than in any known straight current, such as the trade winds; and it is impossible that two opposing currents should generate between them one of much greater force and rapidity than either. If force A joins with force B, surely force C, the product, must have the power of both A and B. But even if this fundamental objection to the theory could be set aside, the small whirlwinds could not thus arise, as they are most frequent when the air is nearly or quite motionless.
Then, again, when we turn to Professor Maury's theory that the cyclones, having been initiated by the conflict of contrary currents, are continued and intensified by the condensation of vapour in their vortex forming a vacuum, we find it negatived by the fact that in the smaller whirlwinds the air is dry, and there is consequently no condensation of vapour; yet, in comparison with their size, they are of as great violence as the fiercest typhoon. Tylor describes the numerous dust whirlwinds he saw on the plains of Mexico,* (* "Anahuac" by E.B. Tylor page 21.) Clarke those on the steppes of Russia, and Bruce those on the deserts of Africa, and nowhere is there mention made of any condensation of vapour. I have seen scores of whirlwinds in Australia, many rising to a height of over one hundred feet; yet there was never any perceptible condensation of vapour, though some of them were of sufficient force to tear off limbs of trees, and carry up the tents of gold-diggers into the air. Franklin describes a whirlwind of greater violence than any of these. It commenced in Maryland by taking up the dust over a road in the form of an inverted sugar-loaf, and soon increased greatly in size and violence. Franklin followed it on horseback, and saw it enter a wood, where it twisted and turned round large trees: leaves and boughs were carried up so high that they appeared to the eye like flies. Again there was no condensation of vapour.
We thus see that whirlwinds of great violence occur when the air is dry, and there can be no condensation. When, however, they are formed at sea, and occasionally on land, the air next the surface is saturated with moisture; and this moisture is condensed when it is carried to a great height, forming clouds, or falling in showers of rain and hail. This condensation of vapour is an effect, and not a cause, and takes place, not in the centre, but at the top or at the sides of the ascending column. This is well shown in an account, by an eye-witness, of a whirlwind that did great damage near the shore of Lough Neagh, in Ireland, in August 1872.* (* "Nature" volume 6 page 541.) It was about thirty yards in diameter. It destroyed several haystacks, and carried the hay up into the air out of sight. It partially unroofed houses, and tore off the branches of trees. The railway station at Randalstown was much injured; great numbers of slates, and two and a half hundredweight of lead were torn from the roof. When passing over a portion of the lake, it presented the appearance of a waterspout. On land everything that it lapped up was whirled round and round, and carried upwards in the centre, whilst dense clouds surrounded the outside and came down near to the earth.
As above mentioned, I had in Australia many opportunities of studying the dust whirlwinds; and as I looked upon them as the initial form of a cyclone, I paid much attention to them. On a small plain, near to Maryborough, in the province of Victoria, they were of frequent occurrence in the hot season. This plain was about two miles across, and was nearly surrounded by trees. In calm, sultry weather, during the heat of the day, there were often two at once in action in different parts of it. They were only a few yards in diameter, but reached to a height of over one hundred feet, and were often, in their higher part, bent out of their perpendicular by upper aerial currents. The dust and leaves they carried up rendered their upward spiral movement very conspicuous. No one who studied these whirlwinds could for a moment believe that they were caused by conflicting currents of air. They occurred most frequently when there was least wind; and this particular plain seemed to be peculiarly suitable for their formation, because it was nearly surrounded by trees, and currents of air were prevented. They lasted several minutes, slowly moving across the plain, like great pillars of smoke.* (* A friend of mine tells me that he saw a similar whirlwind rise at noon one still summer day, and traverse the dusty road on the Chesil Bank between Portland and Weymouth. It travelled fully half a mile, about as fast as he could walk; and the point where it met the ground was not thicker than his walking stick. By and by it swept out to sea, where the dust gradually fell.)
When attentively watched from a short distance, it was seen that as soon as one was formed, the air immediately next the heated soil, which was before motionless, or quivering as over a furnace, was moving in all directions towards the apex of the dust-column. As these currents approached the whirlwind, they quickened and carried with them loose dust and leaves into the spiral whirl. The movement was similar to that which occurs when a small opening is made at the bottom of a wide shallow vessel of water: all the liquid moves towards it, and assumes a spiral movement as it is drawn off.
The conclusion I arrived at, and which has since been confirmed by further study of the question, was, that the particles of air next the surface did not always rise immediately they were heated, but that they often remained and formed a stratum of rarefied air next the surface, which was in a state of unstable equilibrium. This continued until the heated stratum was able, at some point where the ground favoured a comparatively greater accumulation of heat, to break through the overlying strata of air, and force its way upwards. An opening once made, the whole of the heated air moved towards it and was drained off, the heavier layers sinking down and pressing it out. Sir George Airey has suggested to me that the reason of the particles of air not rising as they are heated, when there is no wind blowing, may be due to their viscosity: and this suggestion is correct. That air does not always rise when heated, appears from the hot winds of Australia, which blow from the heated interior towards the cooler south, instead of rising directly upwards. Sultry, close weather, that sometimes lasts for several days, would also be impossible on the assumption that air rises as soon as it is heated.
This explanation supplies us with the force that is necessary to drive the air with the great velocity with which it moves in whirlstorms. The upper, colder, and heavier air is pressing upon the heated stratum, and the greater the area over which the latter extends, the greater will be the weight pressing upon it, and the greater the violence of the whirlwind when an opening is formed for the ascent of the heated air. There is a gradual passage, from the small dust eddies, through larger whirlstorms such as that at Lough Neagh, to tornadoes and the largest cyclone; every step of the gradation might be verified by numerous examples; and if this book were a treatise on meteorology, it might be admissible to give them; but to do this would take up too much of my space, and I shall only now make some observations on the largest form of whirlstorm—the dreaded cyclone.
Just as over the little plain at Maryborough, protected by the surrounding forest from the action of the wind, the heated air accumulates over the surface until carried off in eddies, so, though on a vastly larger scale, in that great bight formed by the coasts of North and South America, having for its apex the Gulf of Mexico, there is an immense area in the northern tropics, nearly surrounded by land, forming a vast oceanic plain, shut off from the regular action of the trade-winds by the great islands of Cuba and Hayti, where the elements of the hurricane accumulate, and at last break forth. In this and such like areas, the lower atmosphere is gradually heated from week to week, and, as in Australia the quivering of the air over the hot ground foreshadows the whirlwind, and in Africa the mirage threatens the simoom, so in the West Indies a continuance of close, sultry weather, an oppressive calm, precedes the hurricane. When at last the huge vortex is formed, the heated atmosphere rushes towards it from all sides, and is drained upwards in a spiral column, just as in the dust-eddy, on a gigantic scale. Unlike the air of the dust-eddy, that of the hurricane coming from the warm surface of the ocean is nearly saturated with vapour, and this, as it is carried up and brought into contact with the colder air on the outside of the ascending column, is condensed and falls in torrents of rain, accompanied by thunder and lightning.
I advanced this theory to account for the origin of whirlwinds in a paper read before the Philosophical Institute of Victoria in 1857. It was afterwards communicated by the Astronomer-Royal to the "London Philosophical Magazine", where it appeared in January 1859. A suggestion that I at the same time offered, that the opposite rotation of cyclones in the two hemispheres was due to the same causes as the westerly deflection of the trade-winds from a direct meridional course, has been generally adopted by physicists, and I am not without hopes that the main theory may also yet be accepted; but whether or not, I am confident that a study of the smaller eddies of air is the proper way to approach the difficult question of the origin of cyclones.
CHAPTER 17.
Cattle-raising. Don Filiberto Trano's new house. Horse-flies and wasps. Teustepe. Spider imitating ants. Mimetic species. Animals with special means of defence are conspicuously marked, or in other ways attract attention. Accident to horse. The "Mygale." Illness. Conclusion of journey.
AFTER crossing the trachytic plain, we reached a large cattle hacienda, and beyond, the river Chocoyo, on the banks of which was some good, though stony, pasture land. We saw here some fine cattle, and learnt that a little more care was taken in breeding them than is usual in Nicaragua. The country, with its rolling savannahs, covered with grass, is admirably suited for cattle-raising, and great numbers are exported to the neighbouring country of Costa Rica. Scarcely any attention is, however, paid to the improvement of the breeds. Few stations have reserve potreros of grass. In consequence, whenever an unusually dry season occurs, the cattle die by hundreds, and their bones may be seen lying all over the plains. Both Para and Guinea grass grow, when planted and protected, with the greatest luxuriance; and the latter especially forms an excellent reserve, as it grows in dense tufts that cannot be destroyed by the cattle. When not protected by fencing, however, the cattle and mules prefer these grasses so much to the native ones, that they are always close-cropped, and when the natural pasturage fails there is no reserve of the other to fall back on. I planted both the Para and Guinea grasses largely at the mines and at Pital, and we were able to keep our mules always in good condition with them.
About four o'clock in the afternoon our animals were getting tired, and we ourselves were rather fatigued, having been in the saddle since daylight, with the exception of a few minutes' rest at Tierrabona. We halted at a thatched cottage on some high stony savannah land, and were hospitably received by the peasant proprietor, Don Filiberto Trano. He informed us that we had entered the township of Teustepe, and that the town itself was eight leagues distant. The family consisted of Don Filiberto, his wife, and four or five children. They had just prepared for their own dinner a young fowl, stewed with green beans and other vegetables, and this they placed before us, saying that they would soon cook something else for themselves. We were too hungry to make any scruples, and after the poor, coarse fare we had been used to, the savoury repast seemed the most delicious I ever tasted. I think we only got two meals on the whole journey that we really enjoyed. This was one, the other the supper that the padre's housekeeper at Palacaguina cooked for us, and I have recorded at length the names of the parties to whom we were indebted for them.
Don Filiberto had about twenty cows, all of which that could be found were driven in at dusk, and the calves tied up. As they came in, the fowls were on the look-out for the garrapatos, or ticks; and the cows, accustomed to the process, stood quietly, while they flew up and picked them off their necks and flanks. The calves are always turned out with the cows in the morning, after the latter are milked, so that if not found again for some days, as is often the case in this bushy and unenclosed country, the cows are milked by them and do not go dry. They give very little milk, probably due to the entire want of care in breeding them. It is at once made into cheese, which forms a staple article of food amongst the poorer natives.
The small house was divided into three compartments, one being used as a kitchen. It was in rather a dilapidated condition, and Don Filiberto told me that he was busy building a new residence. I was curious to see what progress he was making with it, and he took me outside and showed me four old posts used for tying the cows to, which had evidently been in the ground for many years. "There," he said, "are the corner-posts, and I shall roof it with tiles." He was quite grave, but I could not help smiling at his faith. I have no doubt that, as long as he lives, he will lounge about all day, and in the evening, when his wife and children are milking the cows, will come out, smoke his cigarette, leaning against the door-post of his patched and propped-up dwelling, and contemplate the four old posts with a proud feeling of satisfaction that he is building a new house. Such a picture is typical of Nicaragua.
Don Filiberto told us that there was a limestone quarry not far from his house; and as I wished to learn whether it occurred in beds or veins, I proposed next morning to walk over to it, but he said we should need the mules to cross the river. Thinking, from his description, that it was only about a mile distant, I started on mule-back with him; but after riding fully a league, discovered that he actually did not know himself where it was, but was seeking for another man to show him. We at last arrived at the house of this man. He was absent. A boy showed us a small piece of the limestone. It was concretionary, and I learnt from him that it occurred in veins. I was vexed about the time we had lost, and the extra work we had given the poor mules; my only consolation was that as we rode back I picked a fine new longicorn beetle off the leaves of an overhanging tree.
When we came to settle up with our host he proposed to charge us twenty-five cents, just one shilling, or fourpence each. They had given us a good dinner and put themselves to much inconvenience to provide me with a bedstead, and this was their modest charge. Nor did they make it with any expectation that we would give more. It is the universal custom amongst the Mestizo peasantry to entertain travellers; to give them the best they have and to charge for the bare value of the provisions, and nothing for the lodging. We could so depend upon the hospitality of the lower classes that every day we travelled on without any settled place to pass the night, convinced that we should be received with welcome at any hut that we might arrive at when our mules got tired or night came on. The only place in the whole journey where we had been received with hesitation was at the Indian house a day's journey beyond Olama. There the people were pure Indians, and other circumstances made me conclude that the Indians were not so hospitable as the Mestizos.
We finally started about nine o'clock and rode over dry savannahs, where, although there was little grass, I was told that cattle did well browsing on the small brushwood with which the hills were covered. All the forenoon we travelled over stony ranges and dry plains and savannahs. At noon we reached the dry bed of a river and crossed it several times, but could find no water to quench our thirst, whilst the sun shone down on us with pitiless heat. About one o'clock we came to some pools where the bed of the river was bare rock with rounded hollows containing water, warm but clean, as the cattle could not walk over the smooth slopes to get at it. Here we halted for an hour and had some tiste and maize cakes, and cut some Guinea grass that grew amongst the rocks for our mules. Over the heated rocks scampered brown lizards, chasing each other and revelling in the sunshine. Butterflies on lazy wings came and settled on damp spots, and the cicada kept up his shrill continuous monotone, but not so loudly as he would later on when it got cooler. The cicada is supposed by some to pipe only during midday, but both in Central America and Brazil I found them loudest towards sunset, keeping up their shrill music until it was taken up by night-vocal crickets and locusts.
We were returning parallel to our course in going to Segovia, but several leagues to the westward, and this made a wonderful difference in the climate. There we were wading through muddy swamps and drenched with continual rains. Here the plains were parched with heat, vegetation was dried up, and there was scarcely any water in the river beds. The north-east trade-wind, before it reaches thus far, gives up its moisture to the forests of the Atlantic slope, and now passed over without even a cloud to relieve the deep blue of the sky or temper the rays of the sun.
The vegetation on the plains was almost entirely composed of thorny plants and shrubs; acacias, cacti, and bromeliae were the most abundant. Animal life was scarce; there were a few flycatchers amongst the birds, and armadillos were the only mammals. Horse-flies (Tabanus) were too numerous, and drops of blood trickled down our mules' faces where they had feasted. In some parts large, banded black and yellow wasps (Monedula surinamensis, Fabr.) came flying round us and had a threatening look as they hovered before our faces, but they were old acquaintances of mine in Brazil, and I knew that they were only searching about for the horse-flies with which they store their nests, just as other wasps do with spiders, first benumbing them with their sting. I noted here another instance of the instinctive dread that insects have of their natural enemies. The horse-flies were so bloodthirsty that we could kill them with the greatest ease with our hands on the mules' necks, or if we drove them away they would return immediately. As soon, however, as a wasp came hawking round, the flies lost their sluggish apathy and disappeared amongst the bushes, and I do not think that excepting when gorged with blood they would easily fall a prey to their pursuers.
We were joined on the road by a storekeeper on his way to Teustepe. He was armed with pistols, which it is the fashion to carry in Nicaragua, though many travellers have nothing more formidable in their holsters than a spirit flask and some biscuits. He talked as usual of threatened revolutionary risings, but these form the staple conversation throughout Central America amongst the middle classes, and until they really do break out it is best not to believe in them. He told us also that the drought had been very great around Teustepe, and that the crops were destroyed by it.
About three we reached the town, and after buying some provisions to take with us, pushed on again. Below Teustepe we crossed the river Malacatoyo which empties into the Lake of Nicaragua, and beyond it the road passed over a wild alluvial flat with high trees, amongst which we saw a troop of white-faced monkeys.
On the leaves of the bushes there were many curious species of Buprestidae, and I struck these and other beetles off with my net as I rode along.* [* Naturally the example of their chief inspired all the mining officials with an ardour for collecting insects; but, when riding with any of them through the forest or over the plains, Belt's trained eyes always saw so many more than the others that a saying arose that his mule assisted him by stopping before any specimen he had failed to notice!] After one such capture I observed what appeared to be one of the black stinging ants on the net. It was a small spider that closely resembled an ant, and so perfect was the imitation that it was not until I killed it that I determined that it was a spider and that I had needlessly feared its sting. What added greatly to the resemblance was that, unlike other spiders, it held up its two fore-legs like antennae, and moved them about just like an ant. Other species of spiders closely resemble stinging ants; in all of them the body is drawn out long like an ant, and in some the maxillary palpi are lengthened and thickened so as to resemble the head of one.
Ant-like spiders have been noticed throughout tropical America and also in Africa.* (* See "Nature" volume 3 page 508.) The use that the deceptive resemblance is to them has been explained to be the facility it affords them for approaching ants on which they prey. I am convinced that this explanation is incorrect so far as the Central American species are concerned. Ants, and especially the stinging species, are, so far as my experience goes, not preyed upon by any other insects. No disguise need be adopted to approach them, as they are so bold that they are more likely to attack a spider than a spider them. Neither have they wings to escape by flying, and generally go in large bodies easily found and approached. The real use is, I doubt not, the protection the disguise affords against small insectivorous birds. I have found the crops of some humming-birds full of small soft-bodied spiders, and many other birds feed on them. Stinging ants, like bees and wasps, are closely resembled by a host of other insects; indeed, whenever I found any insect provided with special means of defence I looked for imitative forms, and was never disappointed in finding them.
Stinging ants are not only closely copied in form and movements by spiders but by species of Hemiptera and Coleoptera, and the resemblance is often wonderfully close.* (* Amongst the longicorn beetles of Chontales, Mallocera spinicollis, Neoclytus Oesopus, and Diphyrama singularis, Bates, all closely resemble stinging ants when moving about on fallen logs.) All over the world wasps are imitated in form and movements by other insects, and in the tropics these mimetic forms are endless. In many cases the insect imitating is so widely removed, in the normal form of the order to which it belongs, from that of the insect imitated, that it is difficult to imagine how the first steps in the process of imitation took place. Looking however at the immense variety of insect life in the tropics, and remembering that in early tertiary times nearly the whole world was in the same favourable condition as regards temperature (vegetation, according to Heer, extending to the poles), and must have supported a vast number of species and genera that were destroyed during the glacial period, we must suppose that, in that great variety of forms, it sometimes occurred that two species belonging to distinct orders somewhat resembled each other in form or colouration, and that the resemblance was gradually increased, when one species had special means of protection, by the other being benefited the more nearly it approached it in appearance.
It is to be remarked that the forms imitated have always some kind of defence against insectivorous birds or mammals; they are provided with stings or unpleasant odours or flavours, or are exceedingly swift in flight; excepting where inanimate nature is imitated for concealment. Thus I had an opportunity of proving in Brazil that some birds, if not all, reject the Heliconii butterflies, which are closely resembled by butterflies of other families and by moths. I observed a pair of birds that were bringing butterflies and dragon-flies to their young, and although the Heliconii swarmed in the neighbourhood and are of weak flight so as to be easily caught, the birds never brought one to their nest. I had a still better means of testing both these and other insects that are mimicked in Nicaragua. The tame white-faced monkey I have already mentioned was extremely fond of insects, and would greedily munch up beetle or butterfly given to him, and I used to bring to him any insects that I found imitated by others to see whether they were distasteful or not. I found he would never eat the Heliconii. He was too polite not to take them when they were offered to him, and would sometimes smell them, but invariably rolled them up in his hand and dropped them quietly again after a few moments. There could be no doubt, however, from the monkey's actions, that they were distasteful to him. A large species of spider (Nephila) also used to drop them out of its web when I put them into it. Another spider that frequented flowers seemed to be fond of them, and I have already mentioned a wasp that caught them to store its nest with.
Amongst the beetles there is a family that is just as much mimicked as the Heliconii are amongst the butterflies. These are the Lampyridae, to which the fireflies belong. Many of the genera are not phosphorescent, but all appear to be distasteful to insectivorous mammals and birds. I found they were invariably rejected by the monkey, and my fowls would not touch them.
The genus Calopteron belonging to this family is not phosphorescent. In some of the species, as in C. basalis (Klug), the wing-covers are widened out behind in a peculiar manner. This and other species of Calopteron are not only imitated in their colour and markings by other families of beetles, but also in this peculiar widening of the elytra. Besides this, the Calopteron when walking on a leaf raises and depresses its wing cases, and I observed exactly the same movement in a longicorn beetle (Evander nobilis, Bates), which is evidently a mimetic form of this genus. In addition to being mimicked by other families of beetles, Calopteron is closely resembled by a species of moth (Pionia lycoides, Walker). This moth varies itself in colour; in one of the varieties it has a central black band across the wings, when it resembles Calopteron vicinum (Deyrolle), in another this black band is wanting, when it resembles C. basalis. Professor Westwood has also pointed out to me that the resemblance to the beetle is still further increased in the moth by raised lines of scales running lengthwise down the thorax.
The phosphorescent species of Lampyridae, the fireflies, so numerous in tropical America, are equally distasteful, and are also much mimicked by other insects. I found different species of cockroaches so much like them in shape and colour that they could not be distinguished without examination. These cockroaches, instead of hiding in crevices and under logs like their brethren, rest during the day exposed on the surface of leaves, in the same manner as the fireflies they mimic.
Protective resemblances amongst insects are so numerous and widespread, and they have been so ably described by Bates and Wallace, that I shall only mention a few of the most noticeable examples that came under my attention, and which have not been described by other authors. Amongst these were the striking modifications of some beetles belonging to the Mordellidae. These, in their normal form, are curious wedge-shaped beetles, which are common on flowers, and leap like fleas. In some of the Nicaraguan species the body is lengthened, and the thorax and elytra coloured, so as to resemble wasps and flies. In the Mordellidae the head is small, and nearly concealed beneath the large thorax; and in the mimetic forms the latter is coloured so as to resemble the large head and eyes of the wasp or fly imitated. The species that resembles a wasp moves its antennae restlessly, like the latter insect.
The movements, as well as the shape and colour of the insect imitated, are mimicked. I one day observed what appeared to be a hornet, with brown semi-transparent wings and yellow antennae. It ran along the ground vibrating its wings and antennae exactly like a hornet, and I caught it in my net, believing it to be one. On examining it, however, I found it to belong to a widely different order. It was one of the Hemiptera, Spiniger luteicornis (Walk.), and had every part coloured like the hornet (Priocnemis) that it resembled. In its vibrating coloured wing-cases it departed greatly from the normal character of the Hemiptera, and assumed that of the hornets. |
|