W. W. Bryant.--_History of Astronomy_. (Methuen.) Agnes M. Clerke.--_History of Astronomy in the Nineteenth Century_. (A. & C. Black.) George Forbes.--_History of Astronomy_. (Watts.) BIOGRAPHICAL:-- Sir E. S. Ball.--_Great Astronomers_. (Isbister.) Agnes M. Clerke.--_The Herschels and Modern Astronomy_. (Cassell.) Sir O. Lodge.--_Pioneers of Science_. (Macmillan.) {93} INDEX ABERRATION, 83 "Achilles" (Minor planet), 38 Adams, John C., 39 Airy, 39 "Algol," 86 "Andromedes" (Meteors), 80 Apsides, 24, 28 Argelander, 81 BARNARD, E. E., 88 "Bear," The, 14 Biela's Comet, 80 Bouvard, 39 Bradley, 81, 83 Bremiker, 40 CATALOGUES (star), 81-83 Centauri, Alpha, 53 "Ceres" (Minor planet), 38 Challis, 40 Charles II., 50 Chromosphere, 73 Chronometer, 50 Clairaut, 36 Columbus, 48 Comets, 36 Comet, Halley's, 37 ---- Biela's, 80 Conic Sections, 34 Constellations, the, 15 ---- date of, 16 Cook, Capt., 50 Copernicus, 26, 54, 84 "Copernicus" (Lunar crater), 59, 60 Corona, 73 Cowell, 37 Crommelin, 37 DEGREES, 43 Dollond, 47 Double stars, 85 EARTH, form of, 16 ---- size of, 17, 33 Eclipses, 72 Ecliptic, 21 Ellipse, 28 Epicycle, 25 Eratosthenes, 17 "Eros" (Minor planet), 38, 52 Eudoxus, 21 Excentric, 24 Eye-piece, 45 FACULÆ, 70 Flamsteed, 50 GALILEO, 44 Galle, 40 Gascoigne, 46 Gravitation, Law of, 34 HALL, CHESTER MOOR, 47 Halley, 36 Halley's Comet, 37 Harrison, John, 50 Herschel, Sir W., 37, 47, 84 Hipparchus, 24, 81, 83, 87 Hyperbola, 34 JOB, Book of, 12, 14 "Juno" (Minor planet), 38 Jupiter, 18, 32, 77-78 KAPTEYN, 85 Kepler, 28, 44, 88 Kepler's Laws, 29 "Kepler" (Lunar crater), 59 LANGLEY, 74 Latitude, Variation of, 84 "Leonids" (Meteors), 80 Leverrier, 39 Lowell, 63, 64 "Lyrids" (Meteors), 80 MAGNETIC STORM, 76 Magnetism, Earth's, 76 Magnitudes of stars, 86 "Mare Imbrium," 59 Mars, 18, 52, 62-66 ---- Canals of, 63 Maskelyne, 50, 82 Maunder, Mrs. Walter, 72, 74 Mercury, 17, 18, 27, 32, 66-67 Meteors, 79, 80 Micrometer, 46 Milky Way, 53, 88 Minor Planets, 38, 52 Minutes of arc, 44 "Mira," 87 Moon, 11, 14, 21, 32, 33, 49, 55-62 ---- distance of, 51 "_Nautical Almanac_," 50, 82 Navigation, 49 Nebulæ, 89 Neptune, 40, 79 Newcomb, 65 New stars, 87 Newton, 29, 31, 47 Newton's Laws of motion, 31 Nodes, 35 Nutation, 83, 84 "OASES of Mars," 64 Obelisks, 42 Object glass, 45 Observatories, Berlin, 50 ---- Copenhagen, 50 ---- Greenwich, 50 ---- Mt. Wilson, 48 ---- Paris, 50 ---- Pulkowa, 50 ---- St. Petersburg, 50 ---- Washington, 50 ---- Yerkes, 47