D Damoiseau, [78]. D’Arrest, H. L., [96], [119], [142], [212]. Dartmouth Observatory, [56]. Darwin, Sir G. H., [233], [234], [235], [236]. Dawes, W. R., [90], [117]. De la Rue, W., [52], [75]. Delaunay, C. E., [78], [79]. Dembowski, E., [201]. Deneb (α Cygni), [165]. Denning, W. F., [84], [85], [91], [95], [105], [111], [112], [144], [145], [146]. Deslandres, H., [110]. Dick, T., [85], [238]. Disc-theory, [32], [36], [38], [39], [214], [218]. Di Vico, F., [85], [86], [170]. Doberck, W., [201]. Donati, G. B., [130], [131], [169]. Donati’s comet, [130], [133], [136]. Doppler, C., [57], [58]. Doppler’s Principle, [58], [59], [87], [110], [165], [168], [203]. Douglass, A. E., [92], [107]. Draconis (λ), [182]. Draper, H., [136], [172], [175]. Dreyer, J. L. E., [206]. Dunecht Observatory, [157]. Dunér, N. C., [58], [59], [174], [175], [181], [184], [185], [201], [202], [233]. Dunkin, E., [27], [167]. Dunsink Observatory, [156].

E Earth, [76], [97], [103], [104], [147], [148], [149], [153], [154], [156], [236]. Earth-Moon system, [234], [235]. Easton, C., [221]. Eclipses, lunar, [77]. Eclipses, solar, [56], [57], [80], [81]. Edinburgh (Royal) Observatory, [195]. Electrical repulsion theory, [126]. Elger, T. G., [74]. Elkin, W. L., [157]. Encke, J. F., [30], [61], [119], [127], [128], [216]. Encke’s comet, [127], [128], [137]. Erman, [140]. Eros, [62], [101]. Ertborn, [85]. Euler, L., [88], [89]. Evolution, planetary, [228], [229], [230], [231]. Evolution, stellar, [33], [34], [231], [232].

F Faye, H., [60], [129], [230]. Faye’s comet, [129], [137]. Ferguson, J., [9], [178]. Flammarion, C., [87], [91], [95], [121], [147], [164], [187], [195], [201], [202], [226]. Flamsteed, J., [5]. Fleming, Mrs, [192], [195]. Forbes, G., [122]. Fraunhofer, J. [47], [48], [49], [50], [3], [151], [153], [169]. Fraunhofer lines, [48], [49], [50], [51], [169], [172]. Frost, E. B., [205].

G Galactic poles, [35], [224]. Galaxies, external, [32], [218], [225], [226]. Galaxy, or Milky Way, [32], [36]-42, [186], [211], [215], [216], [217], [219], [220], [221], [224], [225]. Galileo, [44], [107]. Galle, J. G., [62], [108], [109], [119], [142]. Galloway, T., [167]. Gambart, [128]. Gauss, C. F., [27], [98], [167]. Gautier, A., [45]. Gemini, [11], [194]. Geminorum (Nova), [194]. Geminorum (ζ), [180], [182], [185]. George III., [11], [23]. Gill, Sir D., [62], [136], [155], [157], [160], [161], [221]. Glasgow Observatory, [216]. Goodricke, J., [178], [183]. Gore, J. E., [24], [38], [179], [181], [182], [183], [192], [202], [215], [220], [225], [226]. Gould, B. A., [135], [160], [163], [180], [220], [221]. Grant, R., [216]. Gravitation, law of, [29]. Greenwich Observatory, [59], [117]. Grimmler, [192]. Groombridge (1830), [156], [162], [223]. Groombridge (1618), [156]. Gruithuisen, [87].

H Hale, G. E., [55], [57], [233]. Hall, A., [96], [111], [112], [156], [190]. Hall, Maxwell, [121]. Halley, E., [138]. Halley’s comet, [123], [130], [152]. Halm, J., [195], [196]. Hansen, P. A., [61], [78], [79]. Hansky, A., [57]. Harding, K. L., [99], [153], [220]. Hartwig, E., [190]. Harvard Observatory, [174], [175], [191]. Hasselberg, B., [148], [190]. Heis, E., [179], [220]. Heliometer, [153], [157]. Helium stars, [174]. Helmholtz, H., [61], [229]. Hencke, K. L., [99]. Henderson, T., [154], [155]. Henry, Paul and Prosper, [100], [114], [210]. Hercules, [167]. Herculis (α), [182]. Herculis (λ), [26]. Herschel, William, [1]-42, [43], [60], [63], [65], [69], [74], [77], [85], [90], [99], [103], [109], [111], [112], [115], [123], [150], [162], [167], [176], [196], [197], [207], [214], [216], [218], [224], [227]. Herschel, A., [144]. Herschel, Caroline, [6], [8], [9], [12], [13], [14], [30], [35], [127], [198]. Herschel, Sir J., [4], [17], [27], [30], [37], [50], [112], [113], [120], [130], [144], [167], [187], [188], [197], [198], [199], [200], [214], [215]. Hind, J. R., [99], [129], [135], [180], [188]. Hoek, [135]. Holden, E. S., [191]. Hough, G., [105]. Houzeau, J. C., [220]. Huggins, Lady, [172]. Huggins, Sir W., [54], [57], [74], [95], [106], [114], [131], [136], [165], [170], [171], [172], [173], [189], [190], [191], [193], [195], [207], [208], [212], [231]. Humboldt, A., [44], [139]. Hussey, W. J., [116], [201].

I Innes, R., [188]. Intra-Mercurial planet, [80], [81]. Italian spectroscopists, [54], [55].

J Janssen, P. J. C., [52], [53], [54], [57], [59], [112], [209]. Juno, [19], [99], [101]. Jupiter, [20], [75], [97], [101]-108, [112], [114], [121], [122], [135], [144], [146]. Juvisy Observatory, [164].

K Kaestner, [65], [124]. Kaiser, F., [90]. Kant, I., [34], [35], [101], [103]. Kapteyn, J. C., [27], [158], [161], [162], [168], [221], [222]. Keeler, J. E., [95], [114], [185], [208], [211], [212], [213], [231]. Kelvin, Lord, [229]. Kempf, P., [181]. Kepler, J., [5], [35], [137]. Kirchoff, G. R., [61], [169], [172]. Kirkwood, D., [140], [230]. Klein, H. J., [73]. Klinkerfues, E., [142], [202]. Konkoly, N., [175]. Küstner, F., [88].

L Lalande, [23], [152]. Lambert, J. H., [34]. Lamont, J., [44]. Langley, S. P., [77]. Laplace, P. S., [20], [33], [34], [77], [109], [148], [152], [195], [227], [228], [229]. Lassell, W., [112], [115], [117], [120]. Latitude, variation of, [88], [89]. Leipzig Observatory, [173]. Leonid meteors, [139], [140], [142]. Leonis (β), [183]. Lescarbault, [80]. Le Verrier, U. J. J., [61], [80], [81], [118], [119], [120], [142], [164]. Leyden Observatory, [91]. Libræ (δ), [180]. Lick Observatory, [93], [107], [166], [168], [191], [213]. Light, extinction of, [40], [215], [216], [224], [225]. Lindsay, Lord, [157]. Linné, [71], [72]. Lockyer, Sir J. N., [52], [53], [54], [55], [58], [149], [174], [191], [193], [195], [208], [209], [231], [232]. Lockyer, W. J. S., [210]. Loewy, M., [75]. Lohrmann, W. G., [68], [71]. Lohse, W. O., [88], [105]. Loomis, [188]. Lowell, P., [83], [84], [86], [87], [91], [92], [93], [94], [122], [236], [237]. Lowell Observatory, [92], [94], [106], [114]. Lund Observatory, [59]. Lupus, [221]. Luther, R., [100]. Lyra, [221]. Lyra (β), [178], [182], [185]. Lyrid meteors, [122].

M Maclaurin, C., [9]. Maclear, Sir T., [155]. Mädler, J. H., [27], [68], [69], [71], [96], [104], [202], [203], [216], [217], [218]. Magellanic clouds, [219]. Magnetism, [44], [60]. Mars, [18], [19], [90]-97, [101], [144], [236]. Maunder, E. W., [59], [60], [94], [95], [134], [145], [166], [224]. Mascari, A., [86]. Mayer, C., [164]. Mayer, J. R., [229]. Mazapil meteorite, [149]. Méchain, [127]. Mee, A., [68]. Melloni, [76]. Mercury, [18], [80], [81]-84, [97], [236]. Messier, C., [30]. Meteorites, [147], [148], [149], [229], [231]. ‘Meteoritic Hypothesis,’ [231], [232]. Meteors, [138]-149. Meudon Observatory, [59]. Milan Observatory, [82], [202], [224]. Milky Way. See Galaxy. Miller, W. A., [50], [172]. Mira Ceti, [11], [182], [186], [187]. Mitchel, O. M., [31]. Mizar (ζ Ursæ Majoris), [204]. Möller, A., [129]. Moon, the, [10], [24], [65]-79, [90], [95], [148], [228]. Moscow Observatory, [132]. Mouchez, A., [161]. Müller, G., [175], [181]. Munich Observatory, [44], [224].