Albedo of Earth, 54, 81 ---- Jupiter, 127 ---- Mars, 81 ---- Moon, 54 _Albumin sol_, 15 Algol-type stars, 35, 144, 145 Antares, 38 Antoniadi, E. M., 97, 104 Archangel, climate of, 87, 88 Arcturus, 35, 37 Aristarchus, lunar crater, 48 "Astronomical unit," 21 Atmosphere of, Mars, 76 ----, Moon, 53 ----, Sun, 25 ----, Venus, 112 Barnard, E. E., 89, 104 Beer, 60, 97, 98 Bond, G. P., 127, 128 Brewster, Sir David, 4 Calcium, 12, 36 Callisto, satellite of Jupiter, 131 Calory, 26 Campbell, W. W., 145 Carbon, 11, 34, 38, 39 Carbonic acid, 11 Cassini, 59, 60, 130 Ceres, minor planet, 41, 120, 121, 122, 131 Cerulli, V., 104, 108 Chromosphere, 28, 29 Cobalt, 33 Comet, Encke's, 119 ----, Halley's, 119 ----, spectra, 38 Copernican theory, 1 Copper, 33 Corona, 40 Coxwell, 25, 75, 79 Cyanogen, 37, 38 Czapek, F., 11, 13 Darwin, Sir G. H., 116 Dawes, W. R., 60, 63, 97, 99 Denning, W. F., 104 Dispersion, anomalous, 28 Doppelmayer, lunar crater, 52 Dubois, Eugene, 155 Eros, minor planet, 57 Europa, satellite of Jupiter, 131 Evans, J. E., 107 Faculae, 29, 30 Fauth, P., 50 Flamsteed, lunar crater, 52 Fluorine, 40 Fraunhofer, 33 Galileo, 51, 59, 131 Ganymede, satellite of Jupiter, 131, 132 Gay-Lussac, 75 Glaisher, J., 25, 75, 79 Goodacre, W., 49 Green, N. E., 60, 62, 63 Greenwich Hospital School, 107, 108 "Gulliver's Travels," 82, 156 Haeckel, E., 12 Halogens, 36, 40 "Harper's Weekly," 93 Helium, 37 Herschel, Sir J., 54 ---- Sir W., 20, 49, 59, 60, 61 Hevelius, 51 Hippalus, lunar crater, 52 Hooke, R., 59, 60, 130 Huyghens, 59 Hydrocarbons, 38 Hydrogen, 11, 36, 37, 38, 41, 81 "Inhabitant," 5 "Inhabited" Worlds, 2, 3, 4 Io, satellite of Jupiter, 131 Iron, 12, 33, 36 Jupiter, 122-32 ----, belts, 127, 129 ----, great red spot, 130 ----, proper motion of spots, 129 ----, satellites of, 128, 131 ----, white spots, 128, 130 Keeler, J. E., 122, 125 Kies, lunar crater, 52 Kirchhoff, 33 Lacus Solis, 97, 98, 99 Langley, S. P., 55 Lilliputians, 82, 83 Linné, lunar crater, 48 Lockyer, J. N., 60 Lowell, P., 65, 66, 67, 69, 71, 81, 97, 98, 99, 101, 103, 104, 105, 106, 108, 109, 110 Lucifer, 111 Mädler, 46, 48, 60, 97, 98 Maginus, lunar crater, 46 Magnesium, 12, 36 Manganese, 33 Mare Fecunditatis, 47 ---- Humerum, 52 ---- Nubium, 52 ---- Serenitatis, 48 Mars, canals of, 57-70, 78, 101, 102 ----, conditions of, 71-95 ----, illusions of, 96-110 ----, meteorology of, 93-4 ----, oases of, 65, 98, 99, 101 ----, thermograph of, 91, 92 ----, winds of, 77 Mendeléeff, 39 Mercury, 114-18 Messier, lunar crater, 47, 48 Metabolism, 10, 11, 14, 15, 38 Millechau, 104 Milton, 51 Mira Ceti, 150 Molesworth, P. B., 49, 104