The following summary of his Printed Papers shews the manner in which they were distributed:

SUMMARY OF PRINTED PAPERS BY G.B. AIRY.

Number of Papers.

In the Transactions of the Cambridge Philosophical Society 30 In the Philosophical Transactions of the Royal Society 29 In the Proceedings of the Royal Society 9 In the Memoirs of the Royal Astronomical Society 35 In the Monthly Notices of the Royal Astronomical Society 129 In the Philosophical Magazine and Journal 32 In the Athenaeum 55 In Encyclopedias, and in various Newspapers and Transactions 58 In Official Reports, Addresses, Parliamentary Returns, Evidence before Committees, Lectures, Letters, Sundry Treatises, and Papers 141 —- Total 518



PRINTED PAPERS BY G.B. AIRY.

Date when read or published. Title of Paper. Where published.

1822 Nov. 25 On the use of Silvered Glass for the Mirrors Camb. Phil. Soc. of Reflecting Telescopes.

1824 Mar. 15 On the Figure assumed by a Fluid Homogeneous Camb. Phil. Soc. Mass, whose Particles are acted on by their mutual Attraction, and by small extraneous Forces.

1824 May 17 On the Principles and Construction of the Camb. Phil. Soc. Achromatic Eye-Pieces of Telescopes, and on the Achromatism of Microscopes.

1824 Trigonometry. Encycl. Metrop.

1825 Feb. 21 On a peculiar Defect in the Eye, and a Camb. Phil. Soc. mode of correcting it.

1825 May 2 On the Forms of the Teeth of Wheels. Camb. Phil. Soc.

1826 May 8 On Laplace's Investigation of the Attraction Camb. Phil. Soc. of Spheroids differing little from a Sphere.

1826 June 15 On the Figure of the Earth. Phil. Trans.

1826 Nov. 26 On the Disturbances of Pendulums and Camb. Phil. Soc. Balances, and on the Theory of Escapements.

1827 Feb. 15 Remarks on a Correction of the Solar Phil. Trans. Tables, required by Mr South's observations.

1827 May 9 On some Passages in Mr Ivory's Remarks Phil. Mag. on a Memoir by M. Poisson relating to the Attraction of Spheroids.

1827 May 14 On the Spherical Aberration of the Camb. Phil. Soc. May 21 Eyepieces of Telescopes.

1827 Dec. 6 On the corrections in the elements of Phil. Trans. Delambre's Solar Tables required by the observations made at the Royal Observatory, Greenwich.

1828 Feb. 26 Address to the Members of the Senate, on an Improvement in the Position of the Plumian Professor.

1828 Nov. 24 On the Longitude of the Cambridge Observatory. Camb. Phil. Soc.

1829 Nov. 13 On a method of determining the Mass of Astr. Soc. the Moon from Transit Observations of (Memoirs) Venus near her inferior conjunction.

1829 Nov. 16 On a Correction requisite to be applied Camb. Phil. Soc. to the Length of a Pendulum consisting of a Ball suspended by a fine Wire.

1829 Dec. 14 On certain Conditions under which a Camb. Phil. Soc. Perpetual Motion is possible.

1830 Aug. 17 Figure of the Earth. Encycl. Metrop.

1831 Feb. 21 On the Nature of the Light in the Two Camb. Phil. Soc. Rays produced by the Double Refraction of Quartz.

1831 Apr. 18 Addition to the above Paper. Camb. Phil. Soc.

1831 Nov. 14 On a remarkable Modification of Newton's Camb. Phil. Soc. Rings.

1831 Nov. 24 On an inequality of long period in the Phil. Trans. motions of the Earth and Venus.

1832 Jan. 2 Translation of Encke's Dissertation (on Encke's Comet) contained in Nos. 210 and 211 of the Astronomische Nachrichten.

1833 Mar. 5 On a new Analyzer, and its use in Camb. Phil. Soc. Experiments of Polarization.

1832 Mar. 19 On the Phenomena of Newton's Rings when formed between two transparent Substances of different refractive Powers.

1832 May 2 Report on the Progress of Astronomy Trans Brit. Ass. during the present century.

1832 Oct. Report of the Syndicate of the Cambridge Observatory.

1833 Feb. 2 Remarks on Mr Potter's Experiment on Phil. Mag. Interference.

1833 Apr. 12 On the Mass of Jupiter, as determined R. Astr. Soc. from the Observation of Elongations of (Memoirs) the Fourth Satellite.

1833 Syllabus of a Course of Experimental Lectures.

1833 May 7 On the Calculation of Newton's Camb. Phil. Soc. Experiments on Diffraction.

1833 May 7 Remarks on Sir David Brewster's Paper Phil. Mag. "On the Absorption of Specific Rays" &c.

1833 May 16 Results of the Repetition of Mr Potter's Phil. Mag. Experiment of interposing a Prism in the Path of Interfering Light.

1833 May On a supposed black bar formed by Phil. Mag. Diffraction.

1833 June 20 Report on Mr Barlow's Fluid-Lens R. Soc. (Proc.) Telescope

1834 Mar. 14 Continuation of Researches into the Value R. Astr. Soc. of the Mass of Jupiter, by observation of (Memoirs.) the Elongations of the Fourth Satellite.

1834 Apr. 14 On the Latitude of Cambridge Observatory Camb. Phil. Soc.

1834 June Report of the Syndicate of the Cambridge Observatory.

1834 June 13 On the Position of the Ecliptic, as inferred R. Astr. Soc. inferred from Transit and Circle (Memoirs.) Observations made at Cambridge Observatory in the year 1833.

1834 June 13 Observations of the Solar Eclipse of July R. Astr. Soc. 16th, 1833, made at Cambridge Observatory, (Memoirs.) and Calculations of the Observations.

1834 Nov. 24 On the Diffraction of an Object-Glass Camb. Phil. Soc. with Circular Aperture.

1834 Dec. 3 On the Calculation of the Perturbations Naut. Alm. of the Small Planets and the Comets of (1837, App.) short period.

1835 May 8 Continuation of Researches into the Value R. Astr, Soc. of Jupiter's Mass. (Memoirs.)

1835 June Report of the Syndicate of the Cambridge Observatory.

1835 June 12 On the Position of the Ecliptic, as R. Astr. Soc. inferred from Observations with the (Memoirs.) Cambridge Transit and Mural Circle, made in the year 1834.

1835 June 12 On the Time of Rotation of Jupiter. R. Astr. Soc. (Memoirs.)

1836 Feb. 12 Speech on delivering the Medal of the R. Astr. Soc. R. Astr. Soc. to Sir John Herschel. (Proc.)

1836 June 4 Report of the Astronomer Royal to the Board of Visitors.

1836 June 9 Report upon a Letter (on a Systematic R. Soc. Course of Magnetic Observations) addressed (Proc.) by M. le Baron de Humboldt to His Royal Highness the President of the Royal Society (by S. Hunter Christie and G.B. Airy).

1837 Jan. 13 Continuation of Researches into the Value R. Astr. Soc. of Jupiter's Mass. (Memoirs.)

1837 Feb. 10 Speech on delivering the Medal of the R. Astr. Soc. R. Astr. Soc. to Professor Rosenberger. (Proc)

1837 Mar. 10 Results of the Observations of the Sun, R. Astr. Soc. Moon, and Planets, made at Cambridge (Memoirs) Observatory in the years 1833, 1834, and 1835.

1837 May 12 On the Position of the Ecliptic, as R. Astr. Soc. inferred from Observations with the (Memoirs) Cambridge Transit and Mural Circle, made in the year 1835.

1837 June 3 Report of the Astronomer Royal to the Board of Visitors.

1837 Sept. 9 Address delivered in the Town Hall of Neath.

1837 Nov. 10 On the Parallax of alpha Lyrae. R. Astr. Soc. (Memoirs.)

1838 Feb. 10 Address to the Earl of Burlington on Religious Examination in the University of London.

1838 Mar. 26 On the Intensity of Light in the Camb. Phil. Soc. neighbourhood of a Caustic.

1838 June 2 Report of the Astronomer Royal to the Board of Visitors.

1838 Dec. 14 A Catalogue of 726 Stars, deduced from R. Astr. Soc. the Observations made at the Cambridge (Memoirs.) Observatory, from 1828 to 1835; reduced to January 1, 1830.

1839 Apr. 25 Account of Experiments on Iron-built Phil. Trans. Ships, instituted for the purpose of discovering a correction for the deviation of the Compass produced by the iron of the Ships.

1839 June 1 Report of the Astronomer Royal to the Board of Visitors.

1839 Nov. 8 On the Determination of the Orbits of R. Astr. Soc. Comets, from Observations. (Memoirs.)

1839 Article "Gravitation." Penny Cyclop.

1839 Article "Greenwich Observatory." Penny Cyclop.

1840 Mar. 2 On a New Construction of the Camb. Phil. Soc. Going-Fusee.

1840 Mar. 13 On the Regulator of the Clock-work for R. Astr. Soc. effecting uniform Movement of Equatoreals.

1840 May 15 On the Correction of the Compass in Un. Serv. Journ. Iron-built Ships. (Proc.)

1840 Results of Experiments on the Disturbance J. Weale. of the Compass in Iron-built Ships.

1840 June 6 Report of the Astronomer Royal to the Board of Visitors.

1840 June 18 On the Theoretical Explanation of an Phil. Trans. apparent new Polarity in Light.

1840 Nov. 19 Supplement to the above Paper. Phil. Trans.

1840 Dec. 4 On the Diffraction of an Annular Aperture. Phil. Mag.

1840 Dec. 9 Remarks on Professor Challis's Investigation Phil. Mag. of the Motion of a Small Sphere vibrating in a Resisting Medium.

1841 Jan. 20 Correction to the above Paper "On the Phil. Mag. Diffraction," &c.

1841 Mar. 22 Remarks on Professor Challis's Reply to Phil. Mag. Mr Airy's Objections to the Investigation of the Resistance of the Atmosphere to an Oscillating Sphere.

1841 June 5 Report of the Astronomer Royal to the Board of Visitors.

1841 July 10 Reply to Professor Challis, on the Phil. Mag. Investigation of the Resistance of the Air to an Oscillating Sphere.

1841 Oct. 26 Extraordinary Disturbance of the Magnets.

1841 Nov. 25 On the Laws of the Rise and Fall of the Phil. Trans. Tide in the River Thames.

1841 Dec. 21 Report of the Commissioners appointed to consider the steps to be taken for Restoration of the Standards of Weight and Measure.

1842 Apr. 16 On the [Greek: Ichtis] of Diodorus Athenaeum.

1842 May 13 Account of the Ordnance Zenith Sector. R. Astr. Soc. (Proc.)

1842 June 4 Report of the Astronomer Royal to the Board of Visitors.

1842 Nov. 11 Observations of the Total Solar Eclipse of R. Astr. Soc. 1842 July 7. (Memoirs.)

1842 Dec. 1 Remarks on the Present State of Hatcliff's Private Charity (Greenwich).

1842 Article on Tides and Waves. Encyc. Metrop.

1843 Mar. 2 On the Laws of Individual Tides at Phil. Trans. Southampton and at Ipswich.

1843 Apr. 29 On Monetary and Metrical Systems. Athenaeum.

1843 June 3 Report of the Astronomer Royal to the Board of Visitors.

1843 Sept. 25 Address to the Individual Members of the Board of Visitors of the Royal Observatory (proposing the Altazimuth).

1843 Oct. 6 Account of the Northumberland Equatoreal and Dome, attached to the Cambridge Observatory.

1843 Nov. 10 Address and Explanation of the proposed Altitude and Azimuth Instrument to the Board of Visitors of the Royal Observatory.

1844 June 1 Report of the Astronomer Royal to the Board of Visitors.

1844 Dec. 12 On the Laws of the Tides on the Coasts of Phil. Trans. Ireland, as inferred from an extensive series of observations made in connection with the Ordnance Survey of Ireland.

1845 Jan. 10 On the Flexure of a Uniform Bar R. Astr. Soc. supported by a number of equal Pressures (Memoirs.) applied at equidistant points, &c.

1845 Feb. 14 Speech on delivering the Medal of the R. Astr. Soc. R. Astr. Soc. to Capt. Smyth (Proc.)

1845 May 9 On a New Construction of the Divided R. Astr. Soc. Eye-Glass Double-Image Micrometer. (Memoirs.)

1845 June 7 Report of the Astronomer Royal to the Board of Visitors.

1845 July 21 On Wexford Harbour.

1846 Report of the Gauge Commissioners. And letter to Sir E. Ryan.

1846 May 7 On the Equations applying to Light under Phil. Mag. the action of Magnetism.

1846 May 12 Remarks on Dr Faraday's Paper on Phil. Mag. Ray-vibrations.

1846 May 25 On a Change in the State of an Eye Camb. Phil. Soc. affected with a Mal-formation.

1846 June 6 Report of the Astronomer Royal to the Board of Visitors.

1846 June Account of the Measurement of an Arc of R. Astr. Soc. Longitude between the Royal Observatory (Month. Not.) of Greenwich and the Trigonometrical Station of Feagh Main, in the Island of Valentia.

1846 July 25 Letter to Sir Robert Harry Inglis, Bart., Athenaeum. M.P., in answer to Sir James South's attack on the Observations at the Greenwich Observatory.

1846 Nov. On the Bands formed by the partial Phil. Mag. Interception of the Prismatic Spectrum.

1846 Nov. 13 Account of some circumstances historically R. Astr. Soc. connected with the Discovery of the (Memoirs.) Planet exterior to Uranus.

1847 Jan. 8 Reduction of the Observations of Halley's R. Astr. Soc. Comet made at the Cambridge Observatory in (Memoirs.) the years 1835 and 1836.

1847 Jan. 8 On a proposed Alteration of Bessel's Method R. Astr. Soc. for the Computation of the Corrections by (Memoirs.) which the Apparent Places of Stars are derived from the Mean Places.

1847 Feb. On Sir David Brewster's New Analysis of Phil. Mag. Solar Light.

1847 Feb. 20 On the Name of the New Planet. Athenaeum.

1847 Feb. 27 Mr Adams and the New Planet. Athenaeum.

1847 Plan of the Buildings and Grounds of the Royal Observatory, Greenwich, with Explanation and History.

1847 May 14 Explanation of Hansen's Perturbations of R. Astr. Soc. the Moon by Venus. (Month. Not.)

1847 June 5 Report of the Astronomer Royal to the Board of Visitors.

1847 Nov. 30 Address to the Individual Members of the Board of Visitors of the Royal Observatory. (Zenith Tube.)

1847 Dec. 10 Results deduced from the Occultations of R. Astr. Soc. Stars and Planets by the Moon, observed (Memoirs.) at Cambridge Observatory from 1830 to 1835.

1848 Feb. 11 Abstract of Struve's "Etudes d'Astronomie R. Astr. Soc. Stellaire." (Month. Not.)

1848 Mar. 13 Syllabus of Lectures on Astronomy to be delivered at the Temperance Hall, Ipswich.

1848 Apr. 10 Remarks on Prof. Challis's Theoretical Phil. Mag. Determination of the Velocity of Sound

1848 May 8 Supplement to a Paper on the Intensity of Camb. Phil. Soc. Light in the neighbourhood of a Caustic.

1848 May 12 Address to Individual members of the Board of Visitors. (New Transit Circle, Reflex Zenith Tube, &c.)

1848 June 3 Report of the Astronomer Royal to the Board of Visitors.

1848 June 9 Corrections of the Elements of the Moon's R. Astr. Soc. Orbit, deduced from the Lunar (Memoirs.) Observations made at the Royal Observatory, of Greenwich from 1750 to 1830.

1848 Aug. 9 Explanation of a proposed construction of Zenith Sector: addressed to the Board of Visitors of the Royal Observatory, Greenwich.

1848 Oct. 14 On the Construction of Chinese Balls Athenaeum.

1849 Description of the Instruments of Process used in the Photographic self-registration of the Magnetical and Meteorological Instruments at the Royal Observatory, Greenwich.

1849 Description of the Altitude and Azimuth Instrument erected at the Royal Observatory, Greenwich, in the year 1847.

1849 Astronomy. (Tract written for the Scientific Manual.)

1849 Mar. 9 Substance of the Lecture delivered by the R. Astr. Soc. Astronomer Royal on the large Reflecting (Month. Not.) Telescopes of the Earl of Rosse and Mr Lassell.

1849 June On a difficulty in the problem of Sound. Phil. Mag.

1849 June 2 Report of the Astronomer Royal to the Board of Visitors.

1849 June 8 On Instruments adapted to the Measure of R. Astr. Soc. small Meridional Zenith Distances. (Month. Not.)

1849 Nov. 9 Results of the Observations made by the R. Astr. Soc. Rev. Fearon Fallows at the Royal (Memoirs.) Observatory, Cape of Good Hope, in the years 1829, 1830, 1831.

1849 Nov. 9 On Bell's Calculating machine, and on R. Astr. Soc. Lord Rosse's Telescope. (Month. Not.)

1849 Nov. 10 On the Exodus of the Israelites. Athenaeum.

1849 Dec. 14 On the Method of observing and recording R. Astr. Soc. Transits, lately introduced in America, &c. (Month. Not.)

1850 Jan. 10 On a problem of Geodesy. Phil. Mag.

1850 Feb. 8 Address on presenting the Medal of the R. Astr. Soc. R. Astr. Soc. to M. Otto von Struve. (Month. Not.)

1850 Mar. 15 On the Present State and Prospects of the R. Inst. Science of Terrestrial Magnetism.

1850 Mar. 16 On the Exodus of the Israelites Athenaeum.

1850 Mar. 30 On the Exodus of the Israelites. Athenaeum.

1850 May 10 Statement concerning Assistance granted R. Astr. Soc. by the Admiralty to Hansen—Also on (Month. Not.) Henderson's numbers for the teeth of wheels.

1850 May 10 On the Weights to be given to the separate R. Astr. Soc. Results for Terrestrial Longitudes, (Memoirs.) determined by the observation of Transits of the Moon and Fixed Stars.

1850 June 1 Report of the Astronomer Royal to the Board of Visitors.

1850 June 14 Letter from Hansen on his Lunar Tables.—Valz R. Astr. Soc. on an arrangement of double-image (Month. Not.) micrometer.—On the Computation of Longitude from Lunar Transits

1850 Dec. 13 On a Method of regulating the Clock-work R. Astr. Soc. for Equatoreals. (Month. Not.)

1850 Dec. 13 Supplement to a Paper "On the Regulation R. Astr. Soc. of the Clock-work for effecting Uniform (Memoirs.) Movement of Equatoreals."

1850 Dec. 27 On the Relation of the Direction of the Phil. Trans. Wind to the Age of the Moon, as inferred from Observations made at the Royal Observatory, Greenwich, from 1840 Nov. to 1847 Dec.

1851 Jan. 14 Remarks on Mr Wyatt's Paper on the Inst. C.E. Construction of the Building for the (Minutes.) Exhibition of the Works of Industry of all Nations in 1851.

1851 Feb. 15 Address on presenting the medal of the R. Astr. Soc. R. Astr. Soc. to Dr Annibale de (Month. Not.) Gasparis.

1851 Mar. 28 Letter to Professor Challis regarding the Adams Prize.

1851 Mar. 29 On Caesar's place of landing in Britain. Athenaeum.

1851 Suggestions to Astronomers for the Brit. Assoc. Observation of the Total Eclipse of the Sun on July 28, 1851.

1851 Apr. 11 On the Determination of the probable R. Astr. Soc. Stability of an Azimuthal Circle by (Month. Not.) Observations of Star and a permanent Collimator.

1851 May 2 On the Total Solar Eclipse of 1851, July 28. R. Inst. (Lecture.)

1851 May 9 On the Vibration of a Free Pendulum in an R. Astr. Soc. Oval differing little from a Straight Line (Memoirs)

1851 June 7 Report of the Astronomer Royal to the Board of Visitors.

1851 July 2 The President's Address to the Twenty-first Athenaeum. Meeting of the British Association for the Advancement of Science, Ipswich.

1851 Oct. 17 On Julius Caesar's Expedition against Naut. Mag. England, in relation to his places of departure and landing.

1851 Nov. 14 Account of the Total Eclipse of the Sun on R. Astr. Soc. 1851, July 28, as observed at Goettenburg, (Memoirs.) at Christiania, and at Christianstadt.

1851 Dec. 13 On the Geography of the Exodus. Athenaeum.

1852 Jan. 9 On the Solar Eclipse of July 28, 1851. R. Astr. Soc. (Month. Not.)

1852 On the place of Caesar's Departure from Soc. of Antiq. Gaul for the Invasion of Britain, and (Memoirs.) the Place of his Landing in Britain, with an Appendix on the Battle of Hastings.

1852 On a New Method of computing the Naut. Alm. 1856, Perturbations of planets, by J.F. App. Encke—translated and illustrated with notes by G.B. Airy.

1852 June 5 Report of the Astronomer Royal to the Board of Visitors.

1853 Feb. 3 On the Eclipses of Agathocles, Thales, Phil. Trans. and Xerxes.

1853 Feb. 4 Lecture on the results of recent R. Inst. calculations on the Eclipse of Thales and Eclipses connected with it.

1853 May 3 Address to the Individual Members of the Board of Visitors of the Royal Observatory, Greenwich. (Lunar Reductions.)

1853 May 14 On Decimal Coinage. Athenaeum.

1853 June 4 Report of the Astronomer Royal to the Board of Visitors.

1853 June Lecture on the Determination of the R. Astr. Soc. Longitude of the Observatory of (Month. Not.) Cambridge by means of Galvanic Signals.

1853 Sept. 10 On Decimal Coinage. Athenaeum.

1853 Dec. 14 Description of the Transit Circle of the Royal Observatory, Greenwich. (App. Gr. Observ. 1852.)

1853 Dec. 14 Regulations of the Royal Observatory, Greenwich. (App. Gr. Observ. 1852.)

1854 Jan. 14 On the Telegraphic Longitude of Brussels. Athenaeum.

1854 Feb. 10 Address on presenting the Gold Medal of R. Astr. Soc. the R. Astr. Soc. to Mr Charles Ruemker. (Month. Not.)

1854 Feb. 25 On Reforms in the University of Cambridge. Athenaeum.

1854 Apr. 15 Letters relating to "The Late M. Mauvais." Liter. Gaz.

1854 June 3 Report of the Astronomer Royal to the Board of Visitors.

1854 Sept. The Deluge. Private.

1854 Oct. 28 On the Correction of the Compass in Iron Athenaeum. Ships. (Scoresby's Experiments.)

1854 Nov. 10 On the Difference of Longitude between R. Astr. Soc. the Observatories of Brussels and Greenwich, (Memoirs.) as determined by Galvanic Signals.

1855 Jan. 1 Lecture at S. Shields on the Pendulum Experiments in the Harton Pit, and Letter on the Results.

1855 Feb. 2 Lecture on the Pendulum Experiments R. Inst. lately made in the Harton Colliery for ascertaining the mean Density of the Earth.

1855 Feb. 3 On the Correction of the Compass in Iron Athenaeum. Ships. (Remarks on Dr Scoresby's Investigations.)

1855 Address on presenting the Medal of the R. Astr. Soc. R. Astr. Soc. to the Rev. William Rutter (Month. Not.) Dawes.

1855 Feb. 15 On the Computation of the Effect of the Phil. Trans. Attraction of Mountain Masses, as disturbing the Apparent Astronomical Latitude of Stations in Geodetic Surveys.

1855 June 2 Report of the Astronomer Royal to the Board of Visitors.

1855 Oct. 18 Address to the Individual Members of the Board of Visitors of the Royal Observatory, Greenwich. (Equatoreal.)

1855 Nov. 21 Remarks upon certain Cases of Personal R. Astr. Soc. Equation which appear to have hitherto (Memoirs.) escaped notice, accompanied with a Table of Results.

1855 Nov. 22 Discussion of the Observed Deviations of Phil. Trans. the Compass in several Ships, Wood-built and Iron-built: with a General Table for facilitating the examination of Compass-Deviations.

1855 Description of the Reflex Zenith Tube of the Royal Observatory, Greenwich. (App. to the Greenwich Obs. for 1854.)

1856 Jan. 9 On Professor Peirce's Criterion for Astr. Journ. discordant observations. (Cambr.)

1856 Jan. 24 Account of Pendulum Experiments undertaken Phil. Trans. in the Harton Colliery, for the purpose of determining the Mean Density of the Earth.

1856 June 7 Report of the Astronomer Royal to the Board of Visitors.

1856 Aug. 25 On Scheutz's Calculating Machine. Phil. Mag.

1856 Aug. 30 Science and the Government. (Reply to Athenaeum. statements in the Morning Chronicle about the instrumental equipment of the Royal Observatory.)

1857 May 8 On the Means which will be available for R. Astr. Soc. correcting the Measure of the Sun's (Month. Not.) Distance in the next twenty-five years.

1857 May 12 Knowledge expected in Computers and Assistants in the Royal Observatory.

1857 June 6 Report of the Astronomer Royal to the Board of Visitors.

1857 June 12 On the Eclipse of Agathocles, the Eclipse R. Astr. Soc. at Larissa, and the Eclipse of Thales. (Memoirs.) With an Appendix on the Eclipse of Stiklastad.

1857 June 18 Account of the Construction of the New Phil. Trans. National Standard of Length, and of its principal copies.

1857 Dec. 5 Letter to the Vice-Chancellor of Cambridge University regarding Smith's Prizes.

1857 Dec. 7 On the Substitution of Methods founded Camb. Phil. Soc. on Ordinary Geometry for Methods based on the General Doctrine of Proportions, in the treatment of some Geometrical Problems

1857 Description of the Galvanic Chronographic Gr. Obs. 1856, Apparatus of the Royal Observatory, App. Greenwich.

1858 Mar. 8 Suggestions for Observation of the Annular Eclipse of the Sun on 1858, March 14-15.

1858 Mar. 12 Note on Oltmann's Calculation of the R. Astr. Soc. Eclipse of Thales. Also On a Method (Month. Not.) of very approximately representing the Projection of a Great Circle upon Mercator's Chart.

1858 May The Atlantic Cable Problem. Naut. Mag.

1858 May 20 Report of the Ordnance Survey Commission; together with Minutes of Evidence and Appendix.

1858 June 5 Report of the Astronomer Royal to the Board of Visitors.

1858 June 16 On the Mechanical Conditions of the Phil. Mag. Deposit of a Submarine Cable.

1858 July Instructions and Chart for Observations R. Astr. Soc. of Mars in right ascension at the (Special.) Opposition of 1860 for obtaining the Measure of the Sun's Distance.

1858 Aug. 20 On the Advantageous Employment of Photog. Notes. Stereoscopic Photographs for the representation of Scenery.

1858 Nov. 6 On the "Draft of Proposed New Statutes Athenaeum. for Trinity College, Cambridge."

1858 Nov. 20 Letter to the Vice-Chancellor of the University of Cambridge, offering the Sheepshanks Endowment.

1858 Dec. 6 Suggestion of a Proof of the Theorem Camb. Phil. Soc. that Every Algebraic Equation has a Root.

1859 Manual of Astronomy—for the Admiralty. Parly. Paper.

1859 Feb. 1 Letter to Lord Monteagle relating to the Standards of Weights and Measures.

1859 Feb. 4 Remarks on Mr Cayley's Trigonometrical Phil. Mag. Theorem, and on Prof. Challis's Proof that Equations have Roots.

1859 Mar. 11 On the Movement of the Solar System in R. Astr. Soc. Space. (Memoirs.)

1859 Apr. 8 On the Apparent Projection of Stars upon R. Astr. Soc. the Moon's Disc in Occultations. Also (Month. Not.) Comparison of the Lunar Tables of Burckhardt and Hansen with Observations of the Moon made at the Royal Observatory, Greenwich.

1859 Apr. 8 On the Apparent Projection of Stars upon R. Astr. Soc. the Moon's Disc in Occultations. (Memoirs.)

1859 June 4 Report of the Astronomer Royal to the Board of Visitors.

1859 June 10 Abstract of Maxwell's Paper "On the R. Astr. Soc. Stability of the Motion of Saturn's Rings." (Month. Not.)

1859 July 8 Corrections of the Elements of the Moon's R. Astr. Soc. Orbit, deduced from the Lunar Observations (Memoirs.) made at the Royal Observatory of Greenwich from 1750 to 1851.

1859 Sept. 10 On the Invasion of Britain by Julius Caesar. Athenaeum. (Answer to Mr Lewin.)

1859 Nov. 12 On Iron Ships—The Royal Charter. Athenaeum. (Answer to Archibald Smith's Remarks.)

1859 Nov. Circular requesting observations of small Planets.

1859 Dec. 9 Notice of the approaching Total Eclipse of R. Astr. Soc. the Sun of July 18,1860, and suggestions (Month. Not.) for observation.

1859 Dec. 12 Supplement to A Proof of the Theorem Camb. Phil. Soc. that Every Algebraic Equation has a Root.

1860 Jan. 13 Description of the New Equatoreal at the R. Astr. Soc. Royal Observatory, Greenwich. Also (Month. Not.) Abstract of an Essay by Gen. T.F. de Schubert on the Figure of the Earth.

1860 Jan. 28 On the Claudian or Plautian Invasion of Athenaeum Britain.

1860 Feb. 2 Examination of Navy 2-foot Telescopes at the Royal Observatory, Greenwich, 1860, Jan. 31 to Feb. 2.

1860 Feb. 11 Report on the Instrumental Equipments Ho. of Commons. of the Exchequer Office of Weights and (Parly. Paper.) Measures, as regards the means for preventing Fraud in the Sale of Gas to the Public; and on the Amendments which may be required to the existing Legislation on that subject.

1860 Mar. 9 Address on the approaching Solar Eclipse R. Astr. Soc. of July 18, 1860, &c. (Month. Not.)

1860 May 10 Correspondence between the Lords Ho. of Commons. Commissioners of Her Majesty's Treasury, (Parly. Paper.) &c., and the Astronomer Royal, relating to Gas Measurement, and the Sale of Gas Act.

1860 June 2 Report of the Astronomer Royal to the Board of Visitors. And Address to the Members of the Board in reference to Struve's Geodetic suggestions.

1860 June 7 Correspondence regarding the Grant of L1000 to Prof. Hansen for his Lunar Tables.

1860 Sept. 13 Remarks on a Paper entitled "On the Polar Distances of the Greenwich Transit Circle, by A. Marth." Addressed to the Members of the Board of Visitors.

1860 Sept. 22 On Change of Climate, in answer to Athenaeum. certain speculations by Sir Henry James.

1860 Oct. 20 Circular relating to the distribution of Greenwich Observations and other publications of the Royal Observatory.

1860 Nov. 9 Account of Observations of the Total R. Astr. Soc. Solar Eclipse of 1860, July 18, made (Month. Not.) at Herena, near Miranda de Ebro; &c. &c.

1860 Nov. 17 On Change of Climate: further discussion. Athenaeum.

1860 Letters on Lighthouses, to the Commission on Lighthouses.

1860 Dec. 14 Note on the translation of a passage in a R. Astr. Soc. letter of Hansen's relating to (Month. Not.) coefficients.

1861 Feb. 9 On the Temperature-correction of Syphon Athenaeum. Barometers.

1861 March Results of Observations of the Solar R. Astr. Soc. Eclipse of 1860 July 18 made at the Royal (Month. Not.) Observatory, Greenwich, for determination of the Errors of the Tabular Elements of the Eclipse. Also Suggestion of a new Astronomical Instrument, for which the name "Orbit-Sweeper" is proposed. Also Theory of the Regulation of a Clock by Galvanic Currents acting on the Pendulum.

1861 June 1 Report of the Astronomer Royal to the Board of Visitors.

1861 June 5 On a supposed Failure of the Calculus of Phil. Mag. Variations.

1861 July Report of a Committee of the R. Soc. on R. Soc.(Proc.) the advisability of re-measuring the Indian Arc of Meridian.

1861 Sept. 21 Lecture at Manchester on the Great Solar Athenaeum. Eclipse of July 18, 1860.

1861 Sept. 21 The same Lecture. London Review.

1861 Oct. Examination Paper for the Sheepshanks Exhibition.

1861 Nov. 1 Translation of Dr Lamont's Paper "On the Phil. Mag. most Advantageous Form of Magnets."

1861 Nov. 8 Note on a Letter received from Hansen on R. Astr. Soc. the Lunar Theory. Also Discussion of (Month. Not.) a Result deduced by Mr D'Abbadie from Observations of the Total Solar Eclipse of 1860, July 18.

1861 Nov. 16 Instructions for observing the Total Eclipse of the Sun on December 31.

1861 Dec. On a Projection by Balance of Errors for Phil. Mag. Maps.

1861 Dec. 28 On the Circularity of the Sun's Disk. R. Astr. Soc. Also Table of Comparative Number of (Month. Not.) Observations of Small Planets.

1862 Jan. On the Direction of the Joints in the Phil. Mag. Faces of Oblique Arches.

1862 Mar. 15 Review of "An Historical Survey of the Athenaeum. Astronomy of the Ancients" by the Rt Hon. Sir G. Cornewall Lewis.

1862 Apr. 24 Notes for the Committee on Weights and Measures, 1862.

1862 May 15 On the Magnetic Properties of Hot-Rolled Phil. Trans. and Cold-Rolled Malleable Iron.

1862 June 7 Report of the Astronomer Royal to the Board of Visitors.

1862 June 24 Evidence given before the Select Committee on Weights and Measures.

1862 Oct. 4 Biography of G.B. Airy (probably in part London Review. based upon data supplied by himself).

1862 Oct. 11 Abstract of Paper "On the Strains in the Athenaeum. Interior of Beams and Tubular Bridges."

1862 Oct. 11 Translation of a Letter from Prof. Lament Phil. Mag. on Dalton's Theory of Vapour, &c.

1862 Nov. 6 On the Strains in the Interior of Beams. Phil. Trans.

1862 Nov. Correspondence with Sabine concerning his attack on the Greenwich Magnetic Observations. (Confidentially communicated to the Board of Visitors.)

1862 Nov. 21 Evidence given before the Public Schools Commission.

1862 Nov. Abstract of M. Auwers's Paper on the R. Astr. Soc. proper motion of Procyon, and Note on (Month. Not.) same.

1862 Dec. Abstract of Mr Safford's Paper on the R. Astr. Soc. Proper Motion of Sirius. Also on the (Month. Not.) Forms of Lenses proper for the Negative Eye-pieces of Telescopes. Also on the measurements of the Earth, and the dimensions of the Solar System. Also on Fringes of Light in Solar Eclipses.

1863 Jan. Address to the Board of Visitors on a further attack by Sabine on the Greenwich Magnetic Observations (confidential).

1863 Jan. 9 On the Observations of Saturn made at R. Astr. Soc. Pulkowa and Greenwich. (Month. Not.)

1863 Feb. 24 Report to the Board of Trade on the Proposed Lines of Railway through Greenwich Park.

1863 Mar. 2 Determination of the Longitude of Valencia in Ireland by Galvanic Signals in the summer of 1862 (App. III. to the Gr. Astr. Obsns. 1862).

1863 Mar. 13 On the Movement of the Solar System in R. Astr. Soc. Space, deduced from the Proper Motions (Memoirs.) of 1167 Stars. By Edwin Dunkin (for G.B.A.).

1863 Mar. 13 On the Visibility of Stars in the Pleiades R. Astr. Soc. to the unarmed eye. (Month. Not.)

1863 Mar. 21 On Marriage Odes. Athenaeum.

1863 Apr. 9 Further Report as to the Probable Effects of the London, Chatham and Dover Railway on the Royal Observatory in Greenwich Park.

1863 Apr. 10 Determination of the Sun's Parallax from R. Astr. Soc. observations of Mars during the (Month. Not.) Opposition of 1862. By E.J. Stone (for G.B.A.). Also Remarks on Struve's account of a Local deviation in the direction of Gravity, near Moscow. Also an Account of an apparatus for the observation of the spectra of stars, and results obtained.

1863 Apr. 23 On the Diurnal Inequalities of Phil. Trans. Terrestrial Magnetism, as deduced from observations made at the Royal Observatory, Greenwich, from 1841 to 1857.

1863 May 8 On the Discordance between the Results R. Astr. Soc. for Zenith-Distances obtained by Direct (Memoirs.) Observation, and those obtained by Observation by Reflection from the Surface of Quicksilver.

1863 June 6 Report of the Astronomer Royal to the Board of Visitors.

1863 July 2 On the Amount of Light given by the R. Astr. Soc. Moon at the greatest stage in the (Month. Not.) Excentrically-total Eclipse, 1863, June 1.

1863 Aug. Plan of the Buildings and Grounds of the Royal Observatory, Greenwich, with Explanation and History.

1863 Sept. 5 On the origin of the apparent luminous R. Astr. Soc. band which, in partial eclipses of the (Month. Not.) Sun, has been seen to surround the visible portion of the Moon's limb.

1863 Sept. 5 On the Invasions of Britain by Julius Athenaeum. 1863 Oct. 3 Caesar.

1863 Oct. 17 The Earthquake as observed from Greenwich. Athenaeum.

1863 Nov. On the Numerical Expression of the Phil. Mag. Destructive Energy in the Explosions of Steam-Boilers, &c.

1863 Nov. 13 Convention arranged between M. Le Verrier R. Astr. Soc. and the Astronomer Royal for meridional (Month. Not.) observations of the small Planets, &c.

1863 Nov. 13 Translation of Hansen's Paper R. Astr. Soc. "Calculation of the Sun's Parallax (Month. Not.) from the Lunar Theory," with Notes by G.B.A.

1863 Dec. 17 First Analysis of 177 Magnetic Storms, Phil. Trans. registered by the Magnetic Instruments in the Royal Observatory, Greenwich, from 1841 to 1857.

1864 Jan. 8 Pontecoulant's Paper "Sur le Coefficiant R. Astr. Soc. de l'Equation Parallactique deduit de la (Month. Not.) Theorie," with Notes by G.B.A.

1864 Jan. 26 Remarks on Redman's Paper on the East Inst. C. E. Coast (Chesil Bank, &c.). (Minutes.)

1864 Mar. 10 Note on a Passage in Capt. R. Astr. Soc. Jacob's "Measures of Jupiter," &c. (Month. Not.)

1864 Mar. 11 Notes for the Committee on Weights and Ho. of Comm. Measures, 1862. (Parly. Paper.)

1864 Mar. 17 On a Method of Slewing a Ship without Inst. Nav. Arch. the aid of the Rudder.

1864 Apr. 5 Comparison of the Chinese Record of Solar R. Astr. Soc. Eclipses in the Chun Tsew with the (Month. Not.) Computations of Modern Theory.

1864 June 4 Report of the Astronomer Royal to the Board of Visitors.

1864 June 10 On the Transit of Venus, 1882, Dec. 6. R. Astr. Soc. (Month. Not.)

1864 June 10 On the bright band bordering the Moon's R. Astr. Soc. Limb in Photographs of Eclipses. (Month. Not.)

1864 Notes on Methods of Reduction applicable to the Indian Survey.

1864 Sept. 3 A Visit to the Corryvreckan. Athenaeum.

1864 Sept. 29 Examination Paper for the Sheepshanks Scholarship.

1865 Jan. 13 Comparison of the Transit-Instrument in R. Astr. Soc. its ordinary or reversible form with the (Month. Not.) Transit-Instrument in its non-reversible form, as adopted at Greenwich, the Cape of Good Hope, and other Observatories.

1865 Mar. 9 Syllabus of a course of three Lectures on "Magnetical Errors, &c., with special reference to Iron Ships and their Compasses," delivered at the South Kensington Museum.

1865 Apr. 1 Remarks on Mr Ellis's Lecture on the Horolog. Journ. Greenwich System of Time Signals.

1865 Apr. 1 Free Translation of some lines of Virgil, Athenaeum. "Cithara crinitus Iopas," &c.

1865 June 3 Report of the Astronomer Royal to the Board of Visitors.

1865 June 17 Note on my Recommendation (in 1839) Athenaeum. of Government Superintendence of the Compasses of Iron Ships. Also Note on the birthplace of Thomas Clarkson.

1865 July On Hemiopsy. Phil. Mag.

1865 Aug. 22 On the Value of the Moon's Semidiameter R. Astr. Soc. as obtained by the Investigations of (Month. Not.) Hugh Breen, Esq., from Occultations observed at Cambridge and Greenwich.

1865 Sept. 16 On "The Land of Goshen"—Reply to "A Athenaeum. Suffolk Incumbent."

1865 Oct. 21 Address of the Astronomer Royal to the individual members of the Board of Visitors. (On improved Collimators.)

1865 Oct. 23 Note on an Error of Expression in two R. Astr. Soc. previous Memoirs. Also Description and (Month. Not.) History of a Quadrant made by Abraham Sharp.

1865 Nov. 11 On the Possible Derivation of the National Athenaeum. Name "Welsh."

1865 Essays on the Invasion of Britain by Julius Private. Caesar; The Invasion of Britain by Plautius, and by Claudius Caesar; The Early Military Policy of the Romans in Britain; The Battle of Hastings. (With corr.)

1866 Mar. 10 On "The Compass in Iron Ships." Objections Athenaeum. to passages in a Lecture by Archibald Smith.

1866 Apr. 13 On the Supposed Possible Effect of R. Astr. Soc. Friction in the Tides, in influencing the (Month. Not.) Apparent Acceleration of the Moon's Mean Motion in Longitude. Also on a Method of Computing Interpolations to the Second Order without Changes of Algebraic Sign.

1866 June 2 Report of the Astronomer Royal to the Board of Visitors.

1866 July 17 Papers relating to Time Signals on the Ho. of Comm. Start Point. (Parly. Paper.)

1866 Sept. 1 On the Campaign of Aulus Plautius in Athenaeum. Britain. (Reply to Dr Guest.)

1866 Nov. 19 On the Continued Change in an Eye Camb. Phil. Soc. affected with a peculiar malformation.

1866 Dec. On the Simultaneous Disappearance of R. Astr. Soc. Jupiter's Satellites in the year 1867. (Month. Not.) Also Inference from the observed Movement of the Meteors in the appearance of 1866, Nov. 13-14.

1867 Jan. 1 Memorandum for the consideration of the Commission on Standards. (Policy of introducing Metrical Standards.)

1867 Jan. 12 On Decimal Weights and Measures. Athenaeum.

1867 Feb. 19 On the use of the Suspension Bridge with Inst. C.E. Stiffened Roadway for Railway and other (Minutes.) Bridges of Great Span.

1867 Mar. 21 Computation of the Lengths of the Waves Phil. Trans. of Light corresponding to the Lines in the Dispersion Spectrum measured by Kirchhoff.

1867 Mar. Corresponding Numbers of Elevation in R. Obs. (Also English Feet, and of Readings of Aneroid Meteor. Soc. or Corrected Barometer in English Apr. 17, 1867.) Inches.

1867 Apr. 16 Remarks on Sir W. Denison's Paper on Inst. C.E. "The Suez Canal." (Minutes.)

1867 May 3 Statement of the History and Position of Private. the Blue-coat Girls' School, Greenwich.

1867 June 1 Report of the Astronomer Royal to the Board of Visitors.

1867 June 14 On Certain Appearances of the Telescopic R. Astr. Soc. Images of Stars described by the Rev. (Month. Not.) W.R. Dawes.

1867 Dec. 13 Note on the Total Solar Eclipse of 1868, R. Astr. Soc. Aug. 17-18. (Month. Not.)

1868 Biography of G.B. Airy. (Probably corrected by himself.)

1868 Jan. 4 Biography (with portrait) of G.B. Airy. Ill. Lond. News. (Probably corrected by himself.)

1868 Feb. 6 Comparison of Magnetic Disturbances Phil. Trans. recorded by the Self-registering Magnetometers at the Royal Observatory, Greenwich, with Magnetic Disturbances deduced from the corresponding Terrestrial Galvanic Currents recorded by the Self-registering Galvanometers of the Royal Observatory.

1868 Mar. 13 Address of the Astronomer Royal to the Individual Members of the Board of Visitors. (Number of Copies of Observations.)

1868 June 6 Report of the Astronomer Royal to the Board of Visitors.

1868 July 24 First Report of the Commissioners appointed Parly. Paper. to enquire into The Condition of the Exchequer Standards.

1868 Sept. 19 The Inundation at Visp. Athenaeum.

1868 Nov. 9 On the Factorial Resolution of the Trinomial Camb. Phil. Soc. x^n - 2cos n. a. + 1/x^n.

1868 Dec. 10 On the Diurnal and Annual Inequalities Phil. Trans. of Terrestrial Magnetism, as deduced from Observations made at the Royal Observatory from 1858 to 1863, &c.

1868 Dec.11 On the Preparatory Arrangements for the R. Astr. Soc. Observation of The Transits of Venus (Month. Not.) 1874 and 1882.

1868 Dec. 12 On the Migrations of the Welsh Nations. Athenaeum.

1869 Mar. 8 Memorandum by the Chairman (on the use of the Troy Weight) for the consideration of the Members of the Standards Commission.

1869 Apr. 3 Second Report of the Commissioners appointed Parly. Paper. to enquire into the condition of the Exchequer (now Board of Trade) Standards.—The Metric System.

1869 April Syllabus of Lectures on Magnetism to be delivered in the University of Cambridge.

1869 Apr. 27 Remarks on Shelford's Paper "On the Inst. C.E. Outfall of the River Humber." (Minutes.)

1869 June 1 Memorandum for the consideration of the Standards Commission, on the state of the Question now before them regarding the suggested Abolition of Troy Weight.

1869 June 5 Report of the Astronomer Royal to the Board of Visitors.

1869 Supplementary Memorandum by the Astronomer Royal on the proposed Abolition of Troy Weight.

1869 July 6 Correspondence between the Treasury, the Ho. of Comm. Admiralty, and the Astronomer Royal, (Parly. Paper.) respecting the arrangements to be made for Observing the Transits of Venus, which will take place in the years 1874 and 1882.

1869 Aug. 7 Note on Atmospheric Chromatic Dispersion R. Astr. Soc. as affecting Telescopic Observation, and (Month. Not.) on the Mode of Correcting it.

1869 Oct. 19 Description of the Great Equatoreal of the Royal Observatory, Greenwich. Greenwich Observations, 1868. App.

1870 Feb. 3 Note on an Extension of the Comparison Phil. Trans. of Magnetic Disturbances with Magnetic Effects inferred from observed Terrestrial Galvanic Currents; &c. &c.

1870 Apr. 8 On the question of a Royal Commission Journ. Soc. Arts. for Science.

1870 May 2 Letters to the First Lord of the Admiralty enclosing Application of the Assistants for an increase of Salaries.

1870 May 13 On Decimal and Metrical Systems. Journ. Soc. Arts.

1870 June 4 Report of the Astronomer Royal to the Board of Visitors.

1870 Aug. 27 On the meaning of the word "Whippultree." Athenaeum.

1870 Oct. 22 On the Locality of "Paradise." Athenaeum.

1870 Nov. 12 On the Locality of the Roman Gesoriacum. Athenaeum.

1870 Nov. 30 Recommendation of Prof. Miller for a R. Soc.(Proc.) Royal Medal of the Royal Society. (Quoted by the President.)

1870 Revised Edition of "Astronomy." Man. Naut. Sci.

1871 Jan. 21 The Burial of Sir John Moore. Athenaeum.

1871 Mar. 14 Letter to the Hydrographer of the Admiralty on the qualifications and claims of the Assistants of the Royal Observatory.

1871 Apr. 5 Remarks on the Determination of a Ship's R. Soc. (Proc.) Place at Sea.

1871 May 2 Remarks on Samuelson's Paper "Description Inst. C.E. of two Blast Furnaces," &c. (Minutes.)

1871 May 3 Note on Barometric Compensation of the Phil. Mag. Pendulum.

1871 June 3 Report of the Astronomer Royal to the Board of Visitors.

1871 June 9 Remarks on Mr Abbott's observations on R. Astr. Soc. eta Argus. Also on A.S. Herschel's and (Month. Not.) J. Herschel's Mechanism for measuring Time automatically in taking Transits.

1871 Erratum in Results of Greenwich R. Astr. Soc. Observations of the Solar Eclipse of 1860, (Month. Not.) July 18. Also Observations of the Solar Eclipse of 1870, Dec. 21-22, made at the Royal Observatory, Greenwich.

1871 Aug. Investigation of the Law of the Progress Phil. Mag. of Accuracy in the usual process for Forming a Plane Surface.

1871 Nov.16 Corrections to the Computed Lengths of Phil. Trans. Waves of Light for Kirchhoff's Spectral Lines.

1871 On a supposed alteration in the amount R. Soc. (Proc.) of Astronomical Aberration of Light, produced by the passage of the Light through a considerable thickness of Refracting Medium.

1871 Nov. 29 Biography of G.B. Airy. (Probably Daily Telegraph. corrected by himself.)

1871 Dec. 8 Note on a special point in the R. Astr. Soc. determination of the Elements of the (Month. Not.) Moon's Orbit from Meridional Observations of the Moon.

1871 Dec. 26 Proposed devotion of an Observatory to R. Astr. Soc. observation of the phenomena of Jupiter's (Month. Not.) Satellites.

1872 Jan. Address to the Council of the Royal Society on the propriety of continuing the Grant to the Kew Observatory for meteorological observations.

1872 Feb. 8 Experiments on the Directive Power of Phil. Trans. large Steel Magnets, of Bars of magnetized Soft Iron, and of Galvanic Coils, in their Action on external small Magnets—with Appendix by James Stuart.

1872 Feb. 12 Further Observations on the state of an Camb. Phil. Soc. Eye affected with a peculiar malformation.

1872 Mar. 20 Notes on Scientific Education, submitted to the Royal Commission on Scientific Instruction and the Advancement of Science.

1872 May 9 On a Supposed Periodicity in the R. Soc. (Proc.) Elements of Terrestrial Magnetism, with a period of 26-1/4 days.

1872 Nov. 30 Address (as President) delivered at the Anniversary Meeting of the Royal Society.

1872 Dec. 19 Magnetical Observations in the Phil. Trans. Britannia and Conway Tubular Iron Bridges.

1873 Feb. 25 Remarks on Mr Thornton's Paper on Inst. C.E. "The State Railways of (Minutes.) India"—chiefly in reference to the proposed break of gauge.

1873 Mar. 12 Note on the want of Observations of R. Astr. Soc. Eclipses of Jupiter's First Satellite (Month. Not.) from 1868 to 1872.

1873 Mar. 14 Letter to the Secretary of the R. Astr. Soc. Admiralty on certain Articles which (Month. Not.) had appeared in the Public Newspapers in regard to the approaching Transit of Venus.

1873 Additional Note to the Paper on a R. Soc. (Proc.) supposed Alteration in the Amount of Astronomical Aberration of Light produced by the passage of the Light through a considerable thickness of Refracting Medium.

1873 Apr. 10 List of Candidates for election into the Royal Society—classified.

1873 On the Topography of the "Lady of Private. the Lake."

1873 June 7 Report of the Astronomer Royal to the Board of Visitors.

1873 Nov. 14 On the rejection, in the Lunar R. Astr. Soc. Theory, of the term of Longitude (Month. Not.) depending for argument on eight times the mean longitude of Venus minus thirteen times the mean longitude of the Earth, introduced by Prof. Hansen; &c.

1873 Dec. 1 Address (as President) delivered at the Anniversary Meeting of the Royal Society.

1874 Jan. On a Proposed New Method of treating R. Astr. Soc. the Lunar Theory. (Month. Not.)

1874 May 4 British Expeditions for the Observation of the Transit of Venus, 1874, December 8. Instructions to Observers.

1874 June 6 Report of the Astronomer Royal to the Board of Visitors.

1874 Aug. 6 Regulations of the Royal Observatory, Greenwich. Appendix to the Greenwich Observations, 1873.

1874 Oct. 3 Science and Art. The Moon as carved Athenaeum. on Lee church.

1874 Nov. 13 Preparations for the Observation of the R. Astr. Soc. Transit of Venus 1874, December 8-9. (Month. Not.)

1874 Nov. 17 Remarks on the Paper "On the Nagpur Inst. C.E. Waterworks." (Minutes.)

1874 Dec. Telegrams relating to the Observations R. Astr. Soc. of the Transit of Venus 1874, Dec. 9. (Month. Not.)

1875 Feb. 2 Remarks on Mr Prestwich's Paper on the Inst. C.E. Origin of the Chesil Bank. (Minutes.)

1875 Feb 25 Letter to the Rev. N. M. Ferrers, on the subject of the Smith's Prizes.

1875 Mar. 12 On the Method to be used in Reducing R. Astr. Soc. the Observations of the Transit of (Month. Not.) Venus 1874, Dec. 8.

1875 Mar. Report on the Progress made in the R. Astr. Soc. Calculations for a New Method of (Month. Not.) treating the Lunar Theory.

1875 June 5 Report of the Astronomer Royal to the Board of Visitors.

1875 June 7 Apparatus for Final Adjustment of the Horolog. Journ. Thermal Compensation of Chronometers, by the Astronomer Royal.

1875 Nov. Chart of the Apparent Path of Mars, 1877, R. Astr. Soc. with neighbouring Stars. Also (Month. Not.) Spectroscopic Observations made at the Royal Observatory, Greenwich. Also Observations of the Solar Eclipse of 1875, September 28-29, made at the Royal Observatory, Greenwich.

1876 Jan. Report by the Astronomer Royal on the R. Astr. Soc. present state of the Calculations in his (Month. Not.) New Lunar Theory.

1876 Jan. 27 Note on a point in the life of Sir William Athenaeum. Herschel.

1876 Mar. 15 Evidence given before the Government Committee on the Meteorological Committee.

1876 May 20 On Toasting at Public Dinners. Public Opinion.

1876 June 3 Report of the Astronomer Royal to the Board of Visitors,

1876 Aug. 7 On a Speech attributed to Nelson. Athenaeum.

1876 Dec. Spectroscopic Results for the Rotation of R. Astr. Soc. Jupiter and of the Sun, obtained at the (Month. Not.) Royal Observatory, Greenwich.

1877 Jan. Stars to be compared in R.A. with Mars, R. Astr. Soc. 1877, for Determination of the Parallax (Month. Not.) of Mars.

1877 Mar. Note by the Astronomer Royal on the R. Astr. Soc. Numerical Lunar Theory. Also Remarks (Month. Not.) on Le Verrier's intra-Mercurial Planet. Also on Observations for the Parallax of Mars.

1877 Mar. 27 Remarks on a Paper on "The River Inst. C.E. Thames." (Minutes.)

1877 Apr. On observing for Le Verrier's intra-Mercurial R. Astr. Soc. Planet. Also on the Parallax of (Month. Not.) Mars, and Mr Gill's proposed expedition.

1877 May On the vulgar notion that the Sun or Moon The Observatory is smallest when overhead. (No. 2).

1877 June 2 Report of the Astronomer Royal to the Board of Visitors.

1877 July 16 Report on the Telescopic Observations of Ho. of Commons the Transit of Venus 1874, made in the Parly. Paper. Expedition of the British Government, and on the Conclusion derived from those Observations.

1877 Sept. 13 On Spurious Discs of Stars produced by The Observatory oval object-glasses. (No. 7).

1877 Sept. 24 Obituary Notice of the work of Le Daily News. Verrier—died Sept. 23, 1877.

1877 Nov. 20 On the Value of the Mean Solar Parallax The Observatory &c. from the British telescopic Observations (No. 8). of the Transit of Venus 1874. Also Remarks on Prof. Adams's Lunar Theory.

1877 Nov. On the Inferences for the Value of Mean R. Astr. Soc. Solar Parallax &c. from the Telescopic (Month. Not.) Observations of the Transit of Venus 1874, which were made in the British Expedition for the Observation of that Transit.

1877 Numerical Lunar Theory: Appendix to Greenwich Astronomical Observations 1875.

1877 Dec. 6 On the Tides at Malta. Phil. Trans.

1878 Correspondence with Le Verrier on his The Observatory Planetary Tables in 1876. (No. 10).

1878 On the Proposal of the French Committee The Observatory to erect a Statue to Le Verrier. Also (No. 13). on the Observation of the approaching Transit of Mercury.

1878 Mar. 11 On the Correction of the Compass in Phil. Mag. Iron Ships without use of a Fixed Mark.

1878 Mar. 30 On the Standards of Length in the The Times. Guildhall, London.

1878 Apr. 27 Report of Lecture on "The probable W. Cumberland condition of the Interior of the Times. Earth." On the probable condition of the Trans. of the Interior of the Earth—Revised Cumberland Edition of above Lecture. Assoc., &c.

1878 June 1 Discussion of the Observations of The Observatory the Transit of Mercury on May 6. (No. 14).

1878 Abstract of Lecture delivered at The Observatory Cockermouth on "The Interior of the (No. 14). Earth."

1978 June 1 Report of the Astronomer Royal to the Board of Visitors.

1878 July 1 Remarks on the measurement of the The Observatory photographs taken in the Transit of (No. 15). Venus Observations.

1878 July 13 On the Variable Star R. Scuti: The Observatory distortion in the Photo-heliograph. (No. 16).

1878 Remarks on Mr Gill's Heliometric The Observatory Observations of Mars. (No. 20).

1878 Dec. Note on a Determination of the Mass R. Astr. Soc. of Mars, and reference to his own (Month. Not.) determination in 1828. Also Note on the Conjunction of Mars and Saturn, 1879, June 30.

1879 Jan. 1 On the remarkable conjunction of The Observatory the Planets Mars and Saturn which (No. 21). will occur on 1879, June 30.

1879 Feb. 15 On the names "Cabul" and "Malek." Athenaeum

1879 Feb. 25 On Faggot Votes in Cornwall in 1828. Athenaeum

1879 Mar. 13 Letter on the Examination Papers for the Smith's Prizes.

1879 Apr. 7 Drafts of Resolutions proposed concerning Sadler's Notes on the late Admiral Smyth's "Cycle of Celestial Objects."

1879 June 1 Letter to Le Verrier, dated 1875, The Observatory Feb. 5, in support of the Method (No. 26). of Least Squares.

1879 June 1 Remarks in debate on Sadler's The Observatory "Notes" above-mentioned. (No. 26).

1879 June 7 Report of the Astronomer Royal to the Board of Visitors.

1879 July 29 Index to the Records of occasional R. Astr. Soc. Observations and Calculations made (Month. Not. at the Royal Observatory, Greenwich, supplementary.) and to other miscellaneous Papers connected with that Institution.

1879 Biography of G. B. Airy (perhaps corrected by himself) in French, published at Geneva.

1879 Sept. On the Construction and Use of a Phil. Mag. Scale for Gauging Cylindrical Measures of Capacity.

1880 On the Theoretical Value of the The Observatory Acceleration of the Moon's Mean (No. 37). Motion.

1880 On the Secular Acceleration of The Observatory the Moon—additional note. (No. 37).

1880 Apr. 27 Memoranda for the Commission appointed to consider the Tay Bridge casualty.

1880 Apr. On the Theoretical Value of the R. Astr. Soc. Acceleration of the Moon's Mean (Month. Not.) Motion in Longitude produced by the Change of Eccentricity of the Earth's Orbit.

1880 May On the Preparations to be made for R. Astr. Soc. Observation of the Transit of Venus (Month. Not.) 1882, Dec. 6.

1880 On the present Proximity of Jupiter The Observatory to the Earth, and on the Intervals of (No. 42). Recurrence of the same Phaenomena.

1880 June 5 Report of the Astronomer Royal to the Board of Visitors.

1880 Sept. 4 On the e muet in French. Athenaeum.

1880 Sept. 4 Excursions in the Keswick Keswick District. Guardian.

1880 Dec. 1 Description of Flamsteed's The Observatory Equatoreal Sextant, and Remarks on (No. 44). Graham.

1880 Addition to a Paper entitled "On R. Astr. Soc. the Theoretical Value of the Moon's (Month. Not. Mean Motion in Longitude," &c. supplementary.)

1881 Mar. Effect on the Moon's Movement in R. Astr. Soc. Latitude, produced by the slow (Month. Not.) change of Position of the Plane of the Ecliptic.

1881 June 4 Report of the Astronomer Royal to the Board of Visitors.

1881 Logarithms of the Values of all Inst. C. E. Vulgar Fractions with Numerator and (Minutes.) Denominator not exceeding 100: arranged in order of magnitude.

1881 July 6 A New Method of Clearing the Lunar Distance.—Admiralty.

1881 Aug. 4 On a Systematic Interruption in the order Phil. Mag. of numerical values of Vulgar Fractions, when arranged in a series of consecutive magnitudes.

1882 Sept. 15 Monthly Means of the Highest and R. Soc. (Proc.) Lowest Diurnal Temperatures of the Water of the Thames, and Comparison with the corresponding Temperatures of the Air at the Royal Observatory, Greenwich.

1882 Oct. 19 On the Proposed Forth Bridge. Nature.

1882 Dec. 7 On the Proposed Forth Bridge. Nature.

1883 Jan. 21 On the Ossianic Poems. Athenaeum.

1883 Mar. 12 On the proposed Braithwaite and Daily News. Buttermere Railway. Times. Standard.

1883 Apr. 28 Memorandum on the progress of the Numerical Lunar Theory, addressed to the Board of Visitors of the Royal Observatory, Greenwich.

1883 Letter on The Apparent Inequality in the The Observatory Mean Motion of the Moon. (No. 74).

1883 Aug. 18 On a Singular Morning Dream. Nature.

1883 Sept. 10 Power of organization of the common Nature. mouse.

1883 Nov. 17 On Chepstow Railway Bridge, with general Nature. remarks suggested by that Structure.

1884 Mar. 8 On the Erroneous Usage of the term Athenaeum. "arterial drainage."

1884 On the Comparison of Reversible and The Observatory Non-reversible Transit Instruments. (No. 85).

1884 Nov. 10 On an obscure passage in the Koran. Nature. (?)

1885 May 28 An Incident in the History of Trinity Athenaeum. College, Cambridge.

1885 June 8 Incident No. 2 in the History of Trinity Athenaeum. College, Cambridge.

1885 Nov. 26 Results deduced from the Measure of Phil. Trans. Terrestrial Magnetic Force in the Horizontal Plane, at the Royal Observatory, Greenwich, from 1841 to 1876.

1886 Apr. 6 Integer Members of the First Centenary Nature. satisfying the Equation A squared = B squared + C squared.

1887 Feb. 12 On the earlier Tripos of the University of Nature. (?) Cambridge: in MSS.

1887 Apr. 14 On the Establishment of the Roman Dominion Nature. in South-East Britain.

1887 July 23 On a special Algebraic function, and its Camb. Phil. Soc. application to the solution of (?) some Equations: in MSS.



BOOKS WRITTEN BY G. B. AIRY.

Mathematical Tracts on Physical Astronomy, the Figure of the Earth, Precession and Nutation, and The Calculus of Variations. This was published in 1826. In a 2nd Edition published in 1831 the Undulatory Theory of Optics was added to the above list. Four Editions of this work have been published, the last in 1858. The Undulatory Theory of Optics was published separately in 1877.

Gravitation: an Elementary Explanation of the Principal Perturbations in the Solar System. Written for the Penny Cyclopaedia, and published previously as a book in 1834. There was a 2nd Edition in 1884.

Trigonometry. This was written for the Encyclopaedia Metropolitana about 1825, and was published as a separate book in 1855 under the Title of "A Treatise on Trigonometry."

Six Lectures on Astronomy delivered at the meetings of the friends of the Ipswich Museum at the Temperance Hall, Ipswich, in the month of March 1848. These Lectures under the above Title, and that of "Popular Astronomy, a series of Lectures," have run through twelve editions.

On the Algebraical and Numerical Theory of Errors of Observations and the Combination of Observations, 1st Edition in 1861, 2nd in 1875, 3rd in 1879.

Essays on the Invasion of Britain by Julius Caesar; The Invasion of Britain by Plautius, and by Claudius Caesar; The Early Military Policy of the Romans in Britain; The Battle of Hastings, with Correspondence. Collected and printed for private distribution in 1865.

An Elementary Treatise on Partial Differential Equations. 1866.

On Sound and Atmospheric Vibrations, with the Mathematical Elements of Music. The 1st Edition in 1868, the 2nd in 1871.

A Treatise on Magnetism, published in 1870.

Notes on the Earlier Hebrew Scriptures, published in 1876.

Numerical Lunar Theory, published in 1886.



INDEX.

Accidents (see also Illnesses) Accounts Acts and Opponencies Adams, Prof. J.C. Adams, John Quincey Agrarian fires Aiken Airy, William, father of G.B.A. Airy, Ann, mother of G.B.A. Airy, William, brother of G.B.A., and Basil R. Airy, his son Airy, Arthur, brother of G.B.A. Airy, Elizabeth, sister of G.B.A. Airy, Richarda, wife of G.B.A. Airy, children of G.B.A. George Richard Elizabeth Arthur Wilfrid Hubert Hilda Christabel Annot Osmund Allsop Alnwick Altazimuth instrument Althorp, Lord American Observatories American method of recording Observations (see Galvanic Registration) Ampere Ancient eclipses Anderson, lessee of Harton Colliery Anemometer (see Meteorology) Anniversary parties Antiquarian researches and notes Arago Architecture (see Cathedrals, &c.) Astronomical Society (see Royal Astr. Soc.) Astronomische Gesellschaft Athenaeum newspaper Athenaeum Club Atkinson, Senior Wrangler 1821 Atlantic cable Atmospheric railway (see Railways) Auckland, Lord Aurora Borealis Australian Observatories (see also Observatories) Auwers, Dr Babbage, Charles Baily, Francis Bakhuysen, of Leyden Balance (Public Balance) Baldock, Commander Baldrey, assistant Banks, optician Baring, Sir T. Barlow, Prof. Barlow, W.H. Barnard, Proctor Barnes, Miss Barnes, Gorell Barometers Barry, Sir C. Barton, Bernard Baxter, secretary to the Admiralty Beacons, floating Beaufort, Captain Beaumont's Observatory Bedingfield, pupil Bell Scholarships (see Examinations) Bessell, astronomer Biddell, Arthur, uncle of G.B.A. Biddell, George, uncle of G.B.A. Biddell, William, uncle of G.B.A. Biddell, George Arthur, son of Arthur Biddell Biographical notes Bissett, pupil Blackwood, Captain Blakesley, Canon Blasting Bliss's observations Blomfield, G.B., pupil Bloomfield, Lord Board of Longitude Boileau Bond, G.P. Books, written by G.B.A., Appendix Book Society, Cambr. Bosanquet Bouch, T. Civ. Eng. Boundary of Canada (see Canada) Bouvard, E. Bowstead Bradley's observations Brazil, Emperor of Breakwaters (see Harbours) Breen, assistant Brewster, Sir D. Bridges Brinkley, Dr Bristow, Miss Britannia Bridge (see Bridges) Brooke, Charles British Association Brougham, Lord Browne, G.A. Brunel, Civ. Eng. Buck Buckland, Dr Buckle, pupil Burgoyne, Sir J. Burlington, Lord Burton Busts (see Portraits) Calculating machines Calvert Cambridge Observatory: Assistants Instruments Printed observations General Cambridge University Cambridge Observatory, U.S.A. Canada boundary Cankrein, pupil Canning, Lord Cape of Good Hope, Observatory and Survey Carpenter, assistant Cartmell, Dr Case Catalogues of stars (see Stars) Cathedrals and churches Catton Cavendish experiment Cayley, Prof. Challis, Prof. Chalmers, Dr Cherbourg (see Harbours) Chesil Bank Childers Childers, First Lord of Admiralty Christchurch Christie, Prof. Christie, Astronomer Royal Chronographic barrel (see Galvanic Registration) Chronometers Churches (see Cathedrals) Church service Cincinnati Observatory Clarendon, Lord Clark, Latimer Clarkson, Thomas, and Mrs Clarkson Cleasby, pupil Clegg Clinton, pupil Clocks Cockburn, Sir G. Coinage (see Decimal Coinage) Colby, Col. Colchester Colenso, Bishop College Hall Collorado, Count Colonial Observatories (see Observatories) Comets Commissions Compass corrections Cookson, Dr Cooper, pupil Cooper's telescope (see Telescopes) Copying press Corbaux, Miss Corryvreckan whirlpool Courtney, Rev. J. Cowper, First Commissioner of Works Crawford, pupil Criswick, assistant Cropley, Crosse, Rev. E. Cubitt, Sir W. Daguerrotypes Dalhousie, Lord Davy, Sir Humphrey Davy, Dr Daynou, Lieut. Deal time ball De Berg Decimal coinage and decimal subdividing Dee navigation (see Rivers) Degrees (see also Orders and Elections to Societies) Deighton, publisher De La Rive De La Rue De Launay Deluge, The De Morgan, A. Denison, E.B. Denison, Sir W. Denison, H. Denmark, King of Dent, clockmaker Dent-dale Devonshire, Duke of Dobbs, pupil Dobree, lecturer Docks (see Harbours) Dolcoath experiments Dollond, instrument maker Drainage Drinkwater, Bethune Double-image micrometer Douglas, Sir H. Dover (see Harbours) Dublin professorship (see Professorships) Dublin Observatory (see Observatories) Due, Baron Dundas, Admiral Dundonald, Lord Dunkin, assistant Dunlop, astronomer Durham observatory Earnshaw Earth currents Eastons, manufacturers Eclipses (see also Ancient Eclipses) Edinburgh Observatory Edmonston, Dr Education (see University Education) Egyptian Astronomical Tablets Elections to societies, &c. (see also Degrees and Orders) Electricity, atmospheric Ellenborough, Lord Ellis, W., assistant Elphinstone Encke and Encke's Comet Encyclopaedia Metropolitana Engines (see Steam-engines) Equatoreal, large Estcourt, Col. Evans, lecturer Examinations Exhibitions and prizes Exodus of the Israelites Eye, defects of Eye, estate at Fallows, astronomer Faraday Farish Farr Fellowship Field Fisher Fishmongers' Company Fletcher, Isaac, M.P. Floating Island, Derwentwater Fluid telescope, Barlow's Foley Forbes, Prof. J.D. Foster, Messrs Fox, Alfred Freedom of the City of London Freemantle, Sir T. French, Dr Friends, Personal friends at Cambridge Fries, Prof. Galbraith Galle Galvanic communication, Time-signals, Clocks, and Registration (see also Earth currents) Gambard Gas Act Gauss Gautier Geodesy Geology Geological Society Germany Gibson, pupil Gilbert, Messrs Gilbert, Davies Gill, astronomer Gladstone, W.E. Glaisher, assistant Glasgow Observatory Gordon Gosset Goulburn, Chancellor of the Exchequer Gould, Dr B.A. Goussel Graduation of circles Grant, of Glenmoriston Great Circle sailing (see Navigation) Great Eastern (see Ships) Great Exhibition Great Gable Green, Commander U.S.N. Greenwich Greenwich Observatory, before his appointment as Astronomer Royal Greenwich Observatory: Appointment as Astronomer Royal, and subsequently as Visitor Buildings and grounds in, Instruments Assistants Computations Papers and manuscripts (arrangement of) Estimates Printed Observations Visitations and Reports General Gresswell Groombridge's Catalogue (see Stars) Guest, Caius College Haarlem Hall, Col. Halley and Halley's Comet Hamilton Hamilton, Sir W.R. Hamilton, Admiral Hansard Hansen, Prof. Hansteen Harbours Harcourt, Rev. W. Vernon Hartnup, astronomer Harton Colliery experiments Haviland, Dr Hawkes, Trinity College Hebrew Scriptures Heliograph Hencke Henderson, astronomer Henslow, Prof. Herbert, G. Hereford Herschel, Sir John Herschel, Miss Caroline Herschel, Col. J. Hervey, pupil Higman, Tutor, Trinity College Hilgard, U.S.A. Himalaya Expedition Hind, Moderator Hind, Superintendent Nautical Almanac Hopkins Hovenden, pupil Hudson Huggins, Dr Humboldt, Baron A. Humphreys Hussey, Dr Hustler, Tutor, Trinity College Hyde Parker, Admiral Hygrometers Ibbotson, pupil Iliff Illnesses Inequality, Venus and Earth Inglis, Sir R. Institut de France Institution of Civil Engineers Inverness, Northern Institution of Ipswich Lectures Ireland, notes of Ivory Jackson Jackson, John James, Sir H. Janus (see Steam-engines) Jarrow (see Harbours) Jeffries Jerrard, Dr Jervis, Major Jeune, Dr, V.C. of Oxford Johnson, Capt. Johnson, astronomer Jones, instrument-makers Jones, R. Journeys: Scotland and Cumberland; Swansea; Derbyshire, &c.; Wales; Keswick, &c.; Cornwall, &c.; Orleans; Lake District, &c.; Continent, Observatories, &c.; Cornwall, &c.; Derbyshire; Oxford &c.; Cumberland; Ireland; Scotland; Derbyshire, &c.; Cumberland, &c.; Ireland; Kent; S. Wales; Luddington and Yorkshire; Border of Scotland; S. Wales; Cumberland and Yorkshire; South of Ireland; Ireland; France; Cornwall; Germany; Petersburg, &c.; Ireland; Shetland; Scotland; Sweden; Madeira; Cumberland; Cumberland; Oban, &c.; Italy and Sicily; West Highlands; Switzerland; Central France; Spain (eclipse); Cumberland; West Highlands; West Highlands; Cumberland; Norway; Cumberland; Switzerland; Cumberland; Cumberland; Cumberland; Scotland; Scotland; N. of Scotland; Ireland; Scotland, &c.; Cumberland; Cumberland; Cumberland; Cumberland; S. Wales; Cumberland 358; Cumberland Julius Caesar, landing of Jupiter (see Planets) Keeling Kennedy King, Joshua Kingstown Knight, publisher Knighthood, offers of Lagarde Laing Landman, Engineer Langton Lardner, Dr Lassell, and Lassell's telescope Latitude determinations Lax, Prof. Lectures: College Professorial Miscellaneous Lefevre, J.G.S. Leitch, Dr Le Verrier Lewis, H. Lewis, Sir G.C. Lightfoot, Rev. Dr Lighthouses Lightning Lillingstone Lindsay, Lord Listing, Prof. Liverpool Observatory Livingstone, Dr Lloyd, Dr Lloyd, Prof. Lockyer Lodge London University London, Freedom of the City Long vacations, with pupils Longitude determinations Longitude, Board of (see Board of Longitude) Lowe, Chancellor of the Exchequer Lubbock, Sir John Lucas (computer) Lucasian Professorship (see Professorships) Lunar Reductions Lunar Theory and Tables (see also Numerical Lunar Theory) Lyndhurst, Lord Lyons, Sir E. Macaulay, T.B. Macdonnell, Dr Maclean, of Loch Buy Maclear, Astronomer Madras Observatory 101 Magnetic Observatory and Magnetism (see also Meteorology, Compass corrections, and Earth currents) Main, Robert Maine Boundary (see Canada) Maiden, Prof. Malkin Malta Man-Engines (see Mines) Manuscripts (see Papers) Mars (see Planets) Marshman, pupil Marth, A. Martin, Trin. Coll. Maskelyne, astronomer Mason Mathematical Investigations (see also Appendix "Printed Papers") Mathematical Tracts Mathematical subjects in Maudslays and Field May, Ransomes and May Medals Melbourne University Melville, Lord Mercury (see Planets) Merivale, Dr Meteorology Meteors Middleton, Sir W. Milaud Military researches Miller, Prof. Mines Minto, Lord Mitchell, astronomer Mitchell Miss Molesworth, Sir W. Monteagle, Lord Monument in Playford church Moon: Observations of Theory and Tables of (see Lunar Theory and Tables) Reductions of Observations of (see Lunar Reductions) Mass of Morpeth, Lord Morton, Pierce, pupil Murchison, Sir R. Murray, publisher Musgrave, Charles Musgrave, T. Archbishop Myers Nasmyth Nautical Almanac Navigation Neate, pupil Neptune and Uranus Newall Newcombe, Prof. New Forest Northampton, Lord Northumberland Telescope Numerical Lunar Theory Observatories: see American, Australian, Beaumont's, Cambridge, Cambridge U.S.A., Cape of Good Hope, Cincinnati, Colonial, Dublin, Durham, Edinburgh, Glasgow, Greenwich, Liverpool, Madras, Oxford, Paris, Paramatta, Pulkowa, St Helena, Williamstown Occultations O'Connell Ogilby, pupil Oppolzer, Prof. Opponencies (see Acts and Opponencies) Optics Orders (see also Degrees and Elections to Societies) Ouvaroff, Count Oxford Observatory Oxford, Miscellaneous Packington, Sir J. Palmerston, Lord Papers (see Appendix "Printed Papers") Papers, Arrangement of Parachute, Fall of Parallax (see Sun) Paramatta Observatory Parker, Charles Parker, Vice-Chancellor Paris, Dr Paris Observatory Paris Exhibition Parliamentary Elections Pasley Paul Peacock, George Pearson, Dr Peel, Sir Robert Pendulum Investigations and Experiments Penny Cyclopaedia Pension Pentland Percy, Bishop Personal sketch Philosophical Society, Cambridge Philpott, Dr Photography Piers (see Harbours) Pinheiro, Lieut. Pipon, Lieut. Plana, astronomer Planetary influences Planetary Reductions Planets (see also Transits of Venus) Plantamour Playford Plumian Professorship (see Professorships) Pocket-books for Observations Pogson, astronomer Pond, astronomer Portlock, Capt. Portraits, busts, &c. Post Office, (clocks, &c.) Post Office, stamps and envelopes Pouillet Prince Albert Pritchard, Rev. C. Prizes (see Exhibitions) Probable errors Professorships: Dublin; Lucasian; Plumian Public Schools Commission Pulkowa Observatory Pupils: Bedingfield; Bissett; Blomfield; Buckle; Cankrein; Cleasby; Clinton; Cooper; Crawford; Dobbs; Gibson; Guest; Hervey; Hovenden; Ibbotson; Lewis; Marshman; Morton; Neate; Ogilby; Parker; Rosser; Smith; Tinkler; Tottenham; Turner; Wigram; Williamson Pym, Engineer Queen, H.M. the Queen, Queroualle, Mdlle de Quetelet Railways, near Observatory Railway Gauge Commission Railways, miscellaneous Rain (see Meteorology) Rainbows Ransomes, also Ransomes and May 17, Reach Reflex zenith tube Religious tests and views Repsold Rhodes Richardson, assistant Rigaud, Prof. Rivers Robinson, Dr Robinson, Capt. Rogers, Rev. Rogers, school assistant Romilly, Lord Ronalds Rose, Rev. H.J. Rosse, Lord, and Rosse's Telescope Rosser, pupil Rothery Rothman Round Down Cliff, blasting of Rouse, Rev. R.C. M. Routh, Dr E.J. Royal Astronomical Society (see also Appendix "Printed Papers") Royal Exchange clock Royal Institution Royal Society (see also Appendix "Printed Papers") Royal Society of Edinburgh Ruencker, Paramatta Ruencker Rundell Rusby Russell, Lord John Sabine, Col. Sadler, H. Saint Helena Observatory Samuda Saturn (see Planets) Saunders, G.W. By Saw-mills (see Ship timbers) Schehallien, mountain Scholarship Scholefield Schumacher Scientific Manual Scoop-wheels Scoresby, Dr Scriptural Researches (see Hebrew Scriptures) Sedgwick, Adam Selwyn, Prof. Senate House Examination (see also University Education) Sewers Commission Sheepshanks, Rev. Richard, and Miss Sheepshanks Sheepshanks Fund and Scholarship Shepherd, clock-maker Ship-timbers, Machinery for sawing, Shirreff, Capt. Simmons Simms, F.W. Simms (see Troughton and Simms) Skeleton forms Sly, draughtsman Smith, Rev. R. Smith, father-in-law of G.B.A., and Mrs Smith, Smith, the Misses Smith, sisters of Richarda Airy, Susanna; Elizabeth; Georgiana; Florence; Caroline Smith, Archibald Smith, M., pupil Smith's Prizes Smyth, Capt. W.H. Smyth, Piazzi Societies, &c., Elections to (see Elections) Solar Eclipses (see Eclipses) Solar Inequality (see Sun) Solar System (see Sun) Solar Tables (see Sun) South, Sir James South's Telescope South-Eastern Railway Southampton Southey (Poet) Spectroscopy Spottiswoode Spring-Rice, Lord Monteagle Standards of Length and Weight, and Standards Commission Stars Start Point Steam-engines Stephenson, George Stephenson, Robert Steventon Stewart, Prof. Balfour Stjerneld, Baron Stokes, Prof. Stone, Astronomer Stratford, Lieut. Stroganoff, Count Strutt, Lord Belper Strutt, Jedediah Struve, Otto Stuart, Prof. J. Sun: Miscellaneous Parallax of (see also Transits of Venus) Eclipses of (see Eclipses) Inequality, Venus and Earth Tables of Surveys (see Trigonometrical Surveys) Sussex, Duke of, Sutcliffe Sutcliffe, Miss Sydney University Sylvester Sweden, King of Tate Taylor, architect Taylor, First Assistant to Pond, Taylor, H. Telegraphs (see Galvanic communications) Telescopes (see also Cambridge Observatory Instruments, and Greenwich Observatory Instruments) Teneriffe Experiment Thames, the River, Theology (see also Hebrew Scriptures and Colenso) Thermometers Thermo-multiplier Thirlwall, Bishop Thomas, assistant Thompson, Master Trin. Coll. Thomson, Sir W. Tidal Harbour Commission Tides, Time-signals and Time (see also Galvanic communication, &c.) Time balls (see Time signals) Tinkler, pupil Tottenham, pupil Traill, Dr Transit Circle, Transits of Venus Trigonometrical Survey Trinity College, Cambridge Trinity House Tripos Examination (see Senate-House Examination) Troughton and Simms Tulley, optician Tupman, Capt Turner, pupil Turton, Prof. Tutorship Ulrich, J.G. Universities (see Cambridge, Dublin, Edinburgh, London, Melbourne, Oxford, Sydney) University Education (see also Smith's Prizes and Senate-House Examination) University Press, Uranus (see Neptune) Valencia (see also Longitude Determinations) Venus (see Planets, and Transits of Venus) Venus and Earth inequality (see Inequality) Vernon Harcourt (see Harcourt) Vetch, Capt. Vibrations of ground Vignoles, C.B., engineer Vulliamy, clockmaker Wales, Prince of Walker, Byatt Walker, James, engineer Walker, Sydney, Warburton, H. Washington, Capt. Water telescope (see also Fluid telescope) Watson Waves (see Tides) Webster, M.P. for Aberdeen Western Westminster clock (see also Clocks) Wexford harbour (see Harbours) Wheatstone Whewell, William White House, the, Wigram, pupil Williams, John Williamson, pupil Williamstown Observatory Wilson, Prof. Winchester Winds (see Meteorology) Winning Wood, Sir Charles Wood, Dr Woodbridge, Suffolk Woodhouse, Prof. Woolwich Academy (see Examinations) Wordsworth, Dr, Master of Trin. Coll. Wordsworth, poet Wrede, Baron Wynter, Vice-Chancellor, Oxford Yolland, Col. York Cathedral Young, Dr

THE END