A Short History of Astronomy - Arthur Berry

GENERAL INDEX.

Roman figures refer to the chapters, Arabic to the articles. When several articles are given under one heading the numbers of the most important are printed in clarendon type, thus: [207]. The names of books are printed in italics.

Aberration, X. [206], [207-211], [212], [213], [216], [218]; XII. [263]; XIII. [277], [283], [284]
Académie Française, XI. [232], [238]
Academy of Berlin, XI. [230], [237]
Academy of St. Petersburg, XI. [230], [233]
Academy of Sciences (of Paris), X. [221], [223]; XI. [229-233], [235-237]
Academy of Turin, XI. [237], [238]
Acceleration, VI. [133]; IX. [171], [172], [173], [179], [180], [185], [195]; X. [223]
Ad Vitellionem Paralipomena (of Kepler), VII. [138]
Alae sive Scalae (of Digges), V. [95]
Aldebaran, III. [64]; XIII. [316] n
Alexandrine school, II. [21], [31-33], [36-38], [45], [53]
Alfonsine Tables, III. [66], [68]; V. [94], [96], [99]
Algol, XII. [266]; XIII. [314], [315]
Almagest (of Ptolemy), II. [46-52]; III. [55], [56], [58], [60], [62], [66], [68]; IV. [75], [76], [83]
Almagest (of Abul Wafa), III. [60]
Almagest, New (of Kepler), VII. [148]
Almagest, New (of Riccioli), VIII. [153]
Almanac, Nautical, X. [218]; XIII. [286], [288], [290]
Almanacks, I. [18] n; II. [20], [38]; III. [64], [68]; V. [94], [95], [100]; VII. [136]; X. [218], [224]; XIII. [286], [288], [290]
Altair, III. [64]; XIII. [316] n
Analysis, analytical methods, X. [196]; XI. [234]
Angles, measurement of, I. [7]
Annual equation, V. [111]; VII. [145]
Annual motion of the earth. See Earth, revolution of
Annual motion of the sun. See Sun, motion of
Annual parallax. See Parallax, stellar
Annular eclipse, II. [43]; VII. [145]
Anomalistic month, II. [40]
Ἀντιχθών, II. [24]
Apex of solar motion, XII. [265]
Aphelion, IV. [85]
Apogee, II. [39], [40], [48]; III. [58], [59]; IV. [85]; V. [111]; IX. [184] XI. [233]
Apparent distance, I. [7]
Apple, Newton’s, IX. [170]
Apse, apse-line, II. [39], [40], [48]; IV. [85]; IX. [183]; XI. [235], [236], [242], [246]
Arabic numerals, III. [64]; V. [96]
Arabs, Arab astronomy, II. [46], [53]; III. [56-61], [64], [66], [68]; V. [110]; VIII. [159]; XII. [266]
Arctic regions, II. [35]
Arcturus, XII. [258]
Aries, first point of (♈), I. [13]; II. [33], [42]; IV. [83] n; V. [98], III; X. [198]
Asteroids. See Minor planets
Astrolabe, II. [49]; III. [66]
Astrology, I. [16], [18]; III. [56]; V. [99], [100]; VII. [136], [149], [151]
Astronomiae Fundamenta (of Lacaille), X. [224]
Astronomiae Instauratae Mechanica (of Tycho), V. [107]
Astronomiae Instauratae Progvmnasmata (of Tycho), V. [104]
Astronomical Society, German, XIII. [280]
Astronomical Society, Royal, XII. [256], [263]
Astronomicum Caesareum (of Apian), V. [97]
Astronomisches Jahrbuch, XII. [253]
Astronomy, divisions of, XIII. [272]
Astronomy, descriptive, XIII. [272], [273], [294]
Astronomy, gravitational, X. [196]; XIII. [272], [273], [286]
Astronomy, observational, XIII. [272], [273]
Astronomy, origin of, I. [2]
Astronomy, scope of, I. [1]
Attraction. See Gravitation
Autumnal equinox, I. II. See also Equinox
Axioms. See Laws of Motion
Axis (of an ellipse), XI. [236], [244], [245]
Babylonians. See Chaldaeans
Bagdad, III. [56], [57], [60], [68]
Belts of Jupiter, XII. [267]
Betelgeux, III. [64]
Biela’s comet, XIII. [305]
Binary stars. See Stars, double and multiple
Bode’s Astronomisches Jahrbuch, XII. [253]
Bodily tides, XIII. [292], [293]
Brightness of stars. See Stars, brightness of
Brooks’s comet, XIII. [305]
Brucia, XIII. [294]
Bureau des Longitudes, XI. [238]
Cairo, III. [60]
Calculus of Variations, XI. [237] n
Calendar, Greek, II. [19], [20], [21]
Calendar, Gregorian, II. [22]; IX. [165] n; X. [217]
Calendar, Julian, II. [21], [22]; III. [68]; IV. [73]; IX. [165] n; X. [197] n, [217]
Calendar, Mahometan, III. [56]
Calendar, Roman, II. [21]
Caliphs, III. [56], [57], [69]
Canals of Mars, XIII. [297]
Cartesianism, VIII. [163]; IX. [191], [195]; XI. [229]
Castor, XII. [263], [264], [266]
Catalogues of stars. See Star-catalogues
Cavendish experiment, X. [219]
Celestial latitude. See Latitude, celestial
Celestial longitude. See Longitude, celestial
Celestial sphere, I. [7], [8], [9-11], [13], [14]; II. [24], [26], [33], [38-40], [45], [47], [51]; III. [64], [67]; IV. [78], [80], [83], [88]; V. [98], [105]; VI. [129]; VIII. [157]; X. [198], [207], [208], [214]; XII. [257]; XIII. [272]
Celestial sphere, daily motion of. See Daily motion
Celestial spheres, II. [23], [26], [27], [38], [51], [54]; III. [62], [68]; V. [100], [103]
Centre of gravity, IX. [186]
Centrifugal force, VIII. [158] n
Ceres, XIII. [276], [294]
Chaldaeans (Babylonians), Chaldaean astronomy, I. [6], [11], [12], [16-18]; II. [30], [34], [40], [51], [54]; III. [56]
Chart, photographic, XIII. [280]
Chemistry of the sun, XIII. [299-301], [303]
Chinese astronomy, I. [6], [11]
Chords, II. [47] n
Chromosphere, X. [205]; XIII. [301], [303]
Chronometer, X. [226]
Circular motion, II. [25], [26], [38], [51]; IV. [76]; VII. [139]; VIII. [158]; IX. [171-173]. See also Eccentric, Epicycle
Circumpolar stars, I. [9]; II. [35]
Clock. See Pendulum clock and Chronometer
Clustering power, XII. [261]. See also Condensation of nebulae
Coelum Australe Stelliferum (of Lacaille), X. [223]
Collimation error, X. [225] n
Comets, I. [1]; II. [30]; III. [68], [69]; V. [100], [103-105]; VI. [127], [129]; VII. [144], [146]; VIII. [153]; IX. [190], [192]; X. [200], [205], [217], [224]; XI. [228], [231], [243], [248], [250]; XII. [253], [256], [259]; XIII. [272], [291], [304], [305], [307]
Comet, Biela’s, XIII. [305]
Comet, Brooks’s, XIII. [305]
Comet, Encke’s, XIII. [291]
Comet, Halley’s, VII. [146]; X. [200], [205]; XI. [231], [232]; XIII. [291], [307]
Comet, Lexell’s, XI. [248]; XIII. [305]
Comet, Olbers’s, XIII. [291]
Comet, Pons-Brooks, XIII. [291]
Comet, Tebbutt’s, XIII. [305]
Comet, Tuttle’s, XIII. [291]
Cometographia (of Hevel), VIII. [153]
Commentaries on the Motions of Mars (of Kepler), VII. [135] n, [139], [141], [150] n
Commentariolus (of Coppernicus), IV. [37]; V. [100]
Compleat System of Optics (of Smith), XII. [251]
Complete induction, IX. [195]
Condensation of nebulae, XI. [250]; XII. [261]; XIII. [318]
Conic, conic section, VII. [140] n; XIII. [309]
Conjunction, II. [43], [48] n; III. [60]; V. [110], III; X. [227]
Conservation of energy, XIII. [319]
Constant of aberration, X. [209], [210]; XIII. [283] n
Constellations, I. [12], [13]; II. [20], [26], [34], [42]; X. [223]
Construction of the heavens, XII. [257]. See also Sidereal system, structure of
Corona, VII. [145]; X. [205]; XIII. [301], [303]
Counter-earth, II. [24]
Crape-ring, XII. [267]; XIII. [295]
Craters (on the moon), VIII. [153]; XIII. [296]
Curvature of the earth. See Earth, shape of
Daily Motion (of the celestial sphere), I. [5], [8], [9], [10]; II. [23], [24], [26], [33], [38], [39], [46], [47]; III. [67], [68]; IV. [78], [80], [83]; V. [98], [105]; VI. [129]; VIII. [157]
D’Alembert’s principle, XI. [232], [237] n
Damascus, III. [57]
Darlegung (of Hansen), XIII. [286]
Day, I. [4], II. [16]; II. [47]; XIII. [287], [293], [320]
Day-and-night, I. [16] n
Day-hour, I. [16]
Declination, II. [33], [35], [39]; X. [213], [218]; XIII. [276]
Declination circle, II. [33]
De Coelo (of Aristotle), II. [27]
Deductive method, inverse, IX. [195]
Deferent, II. [39], [48], [51]; III. [68]; IV. [86], [87]
Degree, I. [7]
Deimos, XIII. [295]
De Magnete (of Gilbert), VII. [150]
De Motu (of Newton), IX. [177], [191]
De Mundi aetherei (of Tycho), V. [104]
De Nova Stella (of Tycho), V. [100]
De Revolutionibus (of Coppernicus), II. [41] n; IV. [74-92]; V. [93], [94]; VI. [126]
De Saturni Luna (of Huygens), VIII. [154]
Descriptive astronomy, XIII. [272], [273], [294]
Deviation error, X. [225] n
Dialogue on the Two Chief Systems (of Galilei), VI. [124] n, [128-132], [133]
Differential method of parallax, VI. [129]; XII. [263]; XIII. [278]
Diffraction-grating, XIII. [299]
Dione, VIII. [160]
Dioptrice (of Kepler), VII. [138]
Direct motion, I. [14]
Disturbing force. See Perturbations
Diurnal method of parallax, XIII. [281], [284]
Doctrine of the sphere. See Spherics
Doppler’s principle, XIII. [302], [313], [314]
Double hour, I. [16]
Double-star method of parallax. See Differential method of parallax
Double stars. See Stars, double and multiple
Draconitic month, II. [40], [43]
Durchmusterung, XIII. [280]
Dynamics, VI. [133], [134]; IX. [179], [180]; XI. [230], [232], [237]
Dynamique, Traité de (of D’Alembert), XI. [232]
Earth, I. [1], [15], [17]; II. [28], [29], [32], [39], [41], [43], [47], [49], [51]; III. [66], [69]; IV. [80], [86]; VI. [117], [121], [133]; VII. [136] n, [144], [145], [150]; VIII. [153], [154]; IX. [173], [174], [179-182], [184], [186], [195]; XI. [228], [245]; XIII. [285], [287], [292], [293], [297], [320]. See also the following headings
Earth, density, mass of, IX. [180], [185], [189]; X. [219]; XI. [235]; XIII. [282], [294]
Earth, motion of, II. [24], [32], [47]; IV. [73], [76], [77]; V. [96]. [97], [105]; VI. [121], [125-127], [129-132]; VIII. [161], [162]; IX. [186], [194]; XII. [257]. See also Earth, revolution of and rotation of
Earth, revolution of, annual motion of, II. [23], [24], [28] n, [30], [47]; IV. [75], [77], [79-82], [85-88], [89], [90], [92]; V. [111]; VI. [119], [126], [129], [131], [133]; VII. [139], [142], [146]; VIII. [161]; IX. [172], [183]; X. [207-210], [212], [227]; XI. [235], [236], [240]; XII. [263]; XIII. [278], [282], [283]
Earth, rigidity of, XIII. [285], [292]
Earth, rotation of, daily motion of, II. [23], [24], [28] n; IV. [75], [78], [79] n, [80], [84]; V. [105]; VI. [124], [126], [129], [130]; IX. [174], [194]; X. [206], [207], [213]; XIII. [281], [285], [287], [320]
Earth, shape of, II. [23], [29], [35], [45], [47], [54]; IV. [76]; VIII. [161]; IX. [187], [188]; X. [196], [213], [215], [220], [221], [222], [223]; XI. [229], [231], [237], [248]
Earth, size of, II. [36], [41], [45], [47], [49]; III. [57], [69]; IV. [85]; VII. [145]; VIII. [159], [161]; IX. [173], [174]; X. [221], [222], [223]
Earth, zones of, II. [35], [47]
Earthshine, III. [69]
Easter, rule for fixing, II. [20]
Eccentric, II. [37], [39], [40], [41], [48], [51]; III. [59]; IV. [85], [89], [91]; VII. [139], [150]
Eccentricity, II. [39]; IV. [85]; VII. [140] n; XI. [228], [236], [240], [244-246], [250]; XIII. [294], [318]
Eccentricity fund, XI. [245]
Eclipses, I. [11], [15], [17]; II. [29], [32], [40-42], [43], [47-49], [54]; III. [57], [68]; IV. [76], [85]; V. [110]; VI. [127]; VII. [145], [148]: VIII. [162]; X. [201], [205], [210], [216], [227]; XI. [240]; XIII. [287], [301]
Eclipses, annular, II. [43]; VII. [145]
Eclipses, partial, II. [43]
Eclipses, total, II. [43]; VII. [145]; X. [205]; XIII. [301]
Ecliptic, I. [11], [13], [14]; II. [26], [33], [35], [36], [38], [40], [42], [51]; III. [58], [59], [68]; IV. [80], [82-84], [87], [89]; V. [111]; VIII. [154]; X. [203], [209], [213], [214], [227]; XI. [235], [236], [244], [246], [250]
Ecliptic, obliquity of, I. [11]; II. [35], [36], [42]; III. [59], [68]; IV. [83], [84]; XI. [235], [236]
École Normale, XI. [237], [238]
École Polytechnique, XI. [237]
Egyptians, Egyptian astronomy, I. [6], [11], [12], [16]; II. [23], [26], [30], [45]; IV. [75]
Elements (of Euclid), III. [62], [66]; IX. [165]
Elements (of an orbit), XI. [236], [240], [242], [244], [246]; XIII. [275], [276]
Elements, variation of. See Variation of elements
Ellipse, II. [51] n; III. [66]; VII. [140], [141]; IX. [175], [176], [190], [194]; X. [200], [209], [214]; XI. [228], [236], [242], [244]; XIII. [276], [278], [309]
Ellipticity, X. [221]
Empty month, II. [19], [20]
Empyrean, III. [68]
Enceladus, XII. [255]
Encke’s comet, XIII. [291]
Encyclopaedia, the French, XI. [232]
Energy, XIII. [319]
Ephemerides. See Almanacks
Ephemerides (of Regiomontanus), III. [68]
Epicycle, II. [37], [39], [41], [45], [48], [51], [54]; III. [68]; IV. [85-87], [89-91]; VII. [139], [150]; VIII. [163]; IX. [170], [194]
Epitome (of Kepler), VI. [132]; VII. [144], [145]
Epitome (of Purbach), III. [68]
Equant, II. [51]; III. [62]; IV. [85], [89], [91]; VII. [139], [150]
Equation of the centre, II. [39], [48]; III. [60]; V. [111]
Equator, I. [9], [10], [11]; II. [33], [35], [39], [42]; IV. [82], [84]; V. [98]; VI. [129], [133]; IX. [187]; X. [207], [220], [221]; XIII. [285]
Equator, motion of. See Precession
Equinoctial points, I. [11], [13]; II. [42]. See also Aries, first point of
Equinoxes, I. [11]; II. [39], [42]
Equinoxes, precession of. See Precession
Essai philosophique (of Laplace), XI. [238]
Ether, XIII. [293], [299]
Evection, II. [48], [52]; III. [60]; IV. [85]; V. [111]; VII. [145]
Evening star, I. [14]. See also Venus
Exposition du Système du Monde (of Laplace), XI. [238], [242] n, [250]
Faculae, VIII. [153]; XIII. [300], [301], [303]
Figure of the earth. See Earth, shape of
Firmament, III. [68]
First point of Aries, Libra. See Aries, Libra, first point of
Fixed stars, I. [14]. See Stars
Fluxions, IX. [169], [191]; X. [196]
Fluxions (of Maclaurin), XII. [251]
Focus, VII. [140], [141]; IX. [175]; XI. [236]
Force, VI. [130]; IX. [180], [181]
Fraunhofer lines, XIII. [299], [300], [303], [304]
Front-view construction. See Herschelian telescopes
Full month, II. [19], [20]
Full moon. See Moon, phases of
Fundamenta (of Hansen), XIII. [286]
Fundamenta Astronomiae (of Bessel), X. [218]; XIII. [277]
Funds of eccentricity, inclination, XI. [245]
Galactic circle, XII. [258], [260]
Galaxy. See Milky Way
Gauges, gauging. See Star-gauging
Georgium Sidus. See Uranus
Gravitation, gravity, II. [38] n; VII. [150]; VIII. [158], [161]; IX. passim; X. [196], [201], [213], [215], [219], [220], [223], [226]; XI. passim; XII. [264]; XIII. [282], [284], [286-293], [309], [319]
Gravitational astronomy, X. [196]; XIII. [272], [273], [286]
Gravity, variation of, VIII. [161]; IX. [180]; X. [199], [217], [221], [223]; XI. [231]
Great Bear, I. [12]; XII. [266]
Great circle, I. [11]; II. [33], [42]; IV. [82], [84]
Gregorian Calendar. See Calendar, Gregorian
Grindstone theory, XII. [258]; XIII. [317]
Hakemite Tables, III. [60], [62]
Halley’s comet, VII. [146]; X. [200], [205]; XI. [231], [232]; XIII. [291], [307]
Harmonics (of Smith), XII. [251]
Harmony of the World (of Kepler), VII. [144]
Helium, XIII. [301]
Herschelian telescope, XII. [255], [256]
Historia Coelestis (of Flamsteed), X. [198]
Holy Office. See Inquisition
Horizon, I. [3], [9]; II. [29], [33], [35], [39], [46]; VIII. [161]; XIII. [285]
Horoscopes, V. [99]
Hour, I. [16]
Hydrostatic balance, VI. [115] n
Hyperbola, IX. [190]; XI. [236] n
Hyperion, XIII. [295]
Ilkhanic Tables, III. [62]
Il Saggiatore (of Galilei), VI. [127]
Inclination, III. [58]; IV. [89]; XI. [228], [244], [245], [246], [250]; XIII. [294], [318]
Inclination fund, XI. [245]
Index of Prohibited Books, VI. [126], [132]; VII. [145]
Indians, Indian astronomy, I. [6]; III. [56], [64]
Induction, complete, IX. [195]
Inequalities, long, XI. [243]
Inequalities, periodic, XI. [242], [243], [245], [247]
Inequalities, secular, XI. [242], 243-247; XIII. 282. See also Perturbations
Inequality, parallactic, XIII. [282]
Inferior planets, I. [15]; IV. [87], [88]. See also Mercury, Venus
Inquisition (Holy Office), VI. [126], [132], [133]
Institute of France, XI. [241]
Inverse deductive method, IX. [195]
Inverse square, law of, IX. [172-176], [181], [195]; XI. [233]. See also Gravitation
Ionian school, II. [23]
Iris, XIII. [281]
Irradiation, VI. [129]
Island universe theory, XII. [260]; XIII. [317]
Japetus, VIII. [160]; XII. [267]; XIII. [297]
Julian Calendar. See Calendar, Julian
Juno, XIII. [294]
Jupiter, I. [14-16]; [11]. [25], [51]; IV. [81], [87], [88]; V. [98], [99]; VI. [121], [127]; VII. [136] n, [142], [144], [145], [150]; VIII. [154], [156], [162]; IX. [172], [181], [183], [185-187]; X. [204], [216]; XI. [228], [231], [235], [236], [243-245], [248]; XII. [267]; XIII. [281], [288], [294], [297], [305]. See also the following headings
Jupiter, belts of, XII. [267]
Jupiter, mass of, IX. [183], [185]
Jupiter, rotation of, VIII. [160]; IX. [187]; XIII. [297]
Jupiter, satellites of, II. [43]; VI. [121], [127], [129], [133]; VII. [145], [150]; VIII. [160], [162]; IX. [170], [184], [185]; X. [210], [216]; XI. [228], [248]; XII. [267]; XIII. [283], [295], [297]
Jupiter’s satellites, mass of, XI. [248]
Kepler’s Laws, VII. [141], [144], [145], [151]; VIII. [152]; IX. [169], [172], [175], [176], [186], [194], [195]; X. [220]; XI. [244]; XIII. [294], [309]
Latitude (celestial), II. [33], [42], [43]; III. [63]; IV. [89]
Latitude (terrestrial), III. [68], [69]; IV. [73]; X. [221]; XIII. [285]
Latitude, variation of, XIII. [285]
Law of gravitation. See Gravitation
Laws of motion, VI. [130], [133]; VIII. [152], [163]; IX. [171], [179-181], [183], [186], [194], [195]; XI. [232]
Leap-year, I. [17]; II. [21], [22]
Least squares, XIII. [275], [276]
Letter to the Grand Duchess (of Galilei), VI. [125]
Level error, X. [225] n
Lexell’s comet, XI. [248]; XIII. [305]
Libra, first point of (♎), I. [13]; II. [42]
Librations of the moon, VI. [133]; X. [226]; XI. [237], [239]
Libros del Saber, III. [66]
Light-equation, XIII. [283]
Light, motion of, velocity of, VIII. [162]; X. [208-211], [216], [220]; XIII. [278], [279], [283], [302]. See also Aberration
Logarithms, V. [96], [97] n
Long inequalities, XI. [243]
Longitude (celestial), II. [33], [39], [42], [43]; III. [63]; IV. [87]; VII. [139]
Longitude (terrestrial), III. [68]; VI. [127], [133]; VII. [150]; X. [197], [216], [226]
Longitudes, Bureau des, XI. [238]
Lunar distances, III. [68] n
Lunar eclipses. See Eclipses
Lunar equation, XIII. [282]
Lunar theory, II. [48], [51]; V. [111]; VII. [145]; VIII. [156]; IX. [184], [192]; X. [226]; XI. [228], [230], [231], [233], [234], [240], [241], [242], [248]; XIII. [282], [286], [287], [288], [290]. See also Moon, motion of
Lunation, II. [40]. See also Month, synodic
Macchie Solari (of Galilei), VI. [124], [125]
Magellanic clouds, XIII. [307]
Magnetism, VII. [150]; XIII. [276], [298]
Magnitudes and Distances of the Sun and Moon (of Aristarchus), II. [32]
Magnitudes of stars, II. [42]; XII. [266]; XII. [280], [316]. See also Stars, brightness of
Mars, I. [14-16]; II. [25], [26], [30], [51]; III. [68]; IV. [81], [87]; V. [108]; VI. [129]; VII. [136] n, [139-142], [144], [145]; VIII. [154], [161]; IX. [181], [183], [185]; X. [223], [227]; XI. [235], [245]; XII. [267]; XIII. [281], [282], [284], [294], [295], [297]. See also the following headings
Mars, canals of, XIII. [297]
Mars, mass of, XI. [248]
Mars, opposition of, VIII. [161]; XIII. [281], [284], [297]
Mars, rotation of, VIII. [160]; XIII. [295], [297]
Mars, satellites of, XIII. [295]
Mass, IX. [180], [181], [185]
Mass of the earth, sun, Venus.... See Earth, Sun, Venus ... mass of
Mécanique Analytique (of Lagrange), XI. [237]
Mécanique Celeste (of Laplace), XI. [238], [241], [247], [249], [250]; XIII. [292]
Medicean Planets. See Jupiter, satellites of
Meraga, III. [62]
Mercury, I. [14-16]; II. [25], [26], [45], [47], [51]; III. [66]; IV. [73], [75], [81], [86-89]; VI. [121], [124]; VII. [136] n, [139], [142], [144]; IX. [185]; XIII. [288], [290], [294], [297]. See also the following headings
Mercury, mass of, XI. [248]
Mercury, phases of, VI. [129]
Mercury, rotation of, XIII. [297]
Mercury, transit of, X. [199]
Meridian, II. [33], [39]; III. [57]; VI. [127]; VIII. [157]; X. [207], [218], [221]
Meteorologica (of Aristotle), II. [27]
Meteors, XIII. [305]
Meton’s cycle, II. [20]
Metric system, XI. [237]
Micrometer, VIII. [155]; XIII. [279], [281]
Milky Way, II. [30], [33]; VI. [120]; XII. [258], [260-262]; XIII. [317]
Mimas, XII. [255]
Minor planets, XI. [250] n; XIII. [276], [281], [284], [288], [294], [295], [297], [318]
Minor planets, mass of, XIII. [294]
Minute (angle), I. [7]
Mira, XII. [266]
Mongols, Mongol astronomy, III. [62]
Month, I. [4], [16]; II. [19-21], [40], [48]; IX. [173]; XI. [240]; XIII. [293], [320]. See also the following headings
Month, anomalistic, II. [40]
Month, draconitic, II. [40], [43]
Month, empty, II. [19], [20]
Month, full, II. [19], [20]
Month, lunar, I. [16]; II. [19], [20], [40]
Month, sidereal, II. [40]
Month, synodic, II. [40], [43]
Moon, I. [1], [4], [5], [11], [13-16]; II. [19-21], [25], [28], [30], [32], [39], [43]; III. [68], [69]; IV. [81], [86]; V. [104], [105] n; VI. [119], [121], [123], [129], [130], [133]; VII. [145], [150]; VIII. [153]; IX. [169], [180], [181], [188], [189]; X. [198], [204], [213], [215], [226]; XI [228], [235]; XII. [256], [257], [271]; XIII. [272], [292], [293], [296], [297], [301], [320]. See also the following headings
Moon, angular or apparent size of, II. [32], [41], [43], [46] n, [48]; IV. [73], [85], [90]; V. [105] n
Moon, apparent flattening of, II. [46]
Moon, atmosphere of, XIII. [296]
Moon, distance of, I. [15]; II. [24], [25], [30], [32], [41], [43], [45], [48], [49], [51]; IV. [85], [90]; V. [100], [103]; IX. [173] 185; X. [223]; XIII. [293], [320]
Moon, eclipses of. See Eclipses
Moon, librations of, VI. [133]; X. [226]; XI. [237], [239]
Moon, map of, X. [226]; XIII. [296]
Moon, mass of, IX. [188], [189] XI. [235]
Moon, motion of, I. [4], [8], [13], [15], [17]; II. [20], [24-26], [28], [37], [39], [40], [43], [47], [48], [51]; III. [60]; IV. [73], [81], [85], [89], [90]; V. [111]; VI. [133]; VII. [145], [150]; VIII. [156]; IX. [169], [173], [174], [179], [184], [185], [189], [194], [195]; X. [201], [204], [213], [226]; XI. [235], [237], [248]; XIII. [287], [290], [297], [320]. See also Lunar theory
Moon, origin of, XIII. [320]
Moon, parallax of, II. [43], [49]; IV. [85]. Cf. also Moon, distance of
Moon, phases of, I. [4], [16], [17]; II. [19], [20], [23], [28], [43], [48]; III. [68], [69]; VI. [123]
Moon, rotation of, X. [226]; XI. [248]; XII. [267]; XIII. [297]
Moon, shape of, II. [23], [28], [46]; VI. [119]; XI. [237]
Moon, size of, II. [32], [41]; IV. [85]
Moon, tables of. See Tables, lunar
Moons. See Satellites
Morning star, I. [14]. See also Venus
Morocco, III. [61]
Motion, laws of. See Laws of motion
Multiple stars. See Stars, double and multiple
Mural quadrant, X. [218], [225] n
Music of the spheres, II. [23]; VII. [144]
Mysterium Cosmographicum (of Kepler), V. [108]; VII. [136], [144]
Nadir, III. [64]
Nautical Almanac. See Almanac, Nautical
Nebula in Argus, XIII. [307]
Nebula in Orion, XII. [252], [259], [260]; XIII. [311]
Nebulae, X. [223]; XI. [250]; XII. [252], [256], [259-261]; XIII. [306-308], [310], [311], [317], [318], [319], [320]
Nebulae, spiral, XIII. [310]
Nebular hypothesis, XI. [250]; XIII. [318-320]
Nebulous stars, X. [223]; XII. [260], [261]
Neptune, XIII. [289], [295], [297]
Neptune, satellite of, XIII. [295]
New Almagest (of Kepler), VII. [148]
New Almagest (of Riccioli), VIII. [153]
New moon. See Moon, phases of
New stars. See Stars, new
New Style (N.S.), II. [22]. See also Calendar, Gregorian
Newton’s problem, XI. [228], [229], [249]
Newtonian telescope, IX. [168]; XII. [252], [253], [256]
Night-hour, I. [16]
Node, II. [40], [43]; V. [111]; IX. [184]; X. [213], [214]; XI. [236], [246]
Nubeculae, XIII. [307]
Nucleus (of a comet), XIII. [304]
Nürnberg school, III. [68]; IV. [73]
Nutation, X. [206], [207], [213-215], [216], [218]; XI. [232], [248]; XII. [263]
Νυχθήμερον, I. [16] n
Oberon, XII. [255]
Obliquity of the ecliptic. See Ecliptic, obliquity of
Observational astronomy, XIII. [272], [273]
Occultations, I. [15]; II. [30]
Octaeteris, II. [19]
Olbers’s comet, XIII. [291]
Old Moore’s Almanack, I. [18] n
Old Style (O.S.). See Calendar, Julian
Opposition, II. [43], [48] n; III. [60]; IV. [87], [88]; V. [111]; VIII. [161]; XIII. [281], [284], [297]
Opposition of Mars, VIII. [161]; XIII. [281], [284], [297]
Optical double stars, XII. [264]
Optics (of Gregory), X. [202]
Optics (of Newton), IX. [192]
Optics (of Ptolemy), II. [46]
Optics (of Smith), XII. [251]
Opus Majus, Minus, Tertium (of Bacon), III. [67]
Opuscules Mathématiques (of D’Alembert), XI. [233]
Orion, nebula in, XII. [252], [259], [260]; XIII. [311]
Oscillatorium Horologium (of Huygens), VIII. [158]; IX. [171]
Pallas, XIII. [294]
Parabola, IX. [190]; XI. [236] n; XIII. [276]
Parallactic inequality, XIII. [282]
Parallax, II. [43], [49]; IV. [85], [92]; V. [98], [100], [110]; VI. [129]; VII. [145]; VIII. [161]; X. [207], [212], [223], [227]; XII. [257], [258], [263], [264]; XIII. [272], [278], [279], [281-284]
Parallax, annual, VIII. [161]. See also Parallax, stellar
Parallax, horizontal, VIII. [161]
Parallax of the moon. See Moon, parallax of
Parallax of the sun. See Sun, parallax of
Parallax, stellar, IV. [92]; V. [100]; VI. [129]; VIII. [161]; X. [207], [212]; XII. [257], [258], [263], [264]; XIII. [272], [278], [279]
Parallelogram of forces, IX. [180] n
Parameters, variation of, XI. [233] n. See also Variation of elements
Παραπήγματα II. [20]
Partial eclipses, II. [43]
Pendulum, pendulum clock, V. [98]; VI. [114]; VIII. [157], [158], [161]; IX. [180], [187]; X. [199], [217], [221], [223]; XI. [231]. See also Gravity, variation of
Pendulum Clock (of Huygens), VIII. [158]; IX. [171]
Penumbra (of a sun-spot), VI. [124]; XII. [268]
Perigee, II. [39], [40], [48]; IV. [85]. See also Apse, apse-line
Perihelion, IV. [85]; XI. [231]. See also Apse, apse-line
Periodic inequalities. See Inequalities, periodic
Perturbations, VIII. [156]; IX. [183], [184]; X. [200], [204], [224], [227]; XI. passim; XIII. [282], [293], [294], [297]
Phases of the moon. See Moon, phases of
Phenomena (of Euclid), II. [33]
Phobos, XIII. [295]
Photography, XIII. [274], [279-281], [294], [298], [299], [301], [306]
Photometry, XIII. [316]. See also Stars, brightness of
Photosphere, XII. [268]; XIII. [303]
Physical double stars, XII. [264]. See also Stars, double and multiple
Planetary tables. See Tables, planetary
Planetary theory, II. [51], [52], [54]; III. [68]; IV. [86-90]; XI. [228], [230], [231], [233], [235], [236], [242-247], [248]; XIII. [286], [288-290], [293], See also Planets, motion of
Planets, I. [13], [14], [15], [16]; II. [23-27], [30], [32], [51]; III. [68]; IV. [81]; V. [104], [105], [110], [112]; VI. [119], [121]; VII. [136], [144]; VIII. [154], [155]; X. [200]; XI. [228], [250]; XII. [253], [255], [257], [267], [271]; XIII. [272], [275], [276], [281], [282], [294-296], [297], [318], [320]. See also the following headings, and the several planets Mercury, Venus, etc.
Planets, discoveries of, XII. [253], [254], [255], [267]; XIII. [289], [294], [295], [318]
Planets, distances of, I. [15]; II. [30], [51]; IV. [81], [86], [87]; VI. [117]; VII. [136], [144]; IX. [169], [172], [173]
Planets, inferior, I. [15]; IV. [87], [88]. See also Mercury, Venus
Planets, masses of, IX. [185]; XI. [245], [248]; XIII. [294]. See also under the several planets
Planets, minor. See Minor planets
Planets, motion of, I. [13], [14], [15]; II. [23-25], [26], [27], [30], [41], [45], [47], [51], [52]; III. [62], [68]; IV. [81], [86-90], [92]; V. [100], [104], [105], [112]; VI. [119], [121], [129]; VII. [139-142], [144], [145], [150], [151]; VIII. [152], [156]; IX. [169], [170], [172-177], [181], [183], [194]; X. [199], [204]; XI. [228], [229], [245], [250]; XIII. [275], [276], [282], [294]. See also Planetary theory
Planets, rotation of, VIII. [160]; IX. [187]; XI. [228], [250]; XII. [267]; XIII. [297]
Planets, satellites of. See Satellites
Planets, stationary points of, I. [14]; II. [51]; IV. [88]
Planets, superior, I. [15]; IV. [87], [88]. See also Mars, Jupiter, etc.
Pleiades, VI. [120]; XII. [260]
Poles (of a great circle), II. [33] n
Poles (of the celestial sphere), I. [8], [9], [10]; II. [33], [35]; IV. [78]; VI. [129]; X. [207], [214]; XIII. [285]
Poles (of the earth), IV. [82]; IX. [187]; X. [220], [221]; XIII. [285]
Pole-star, I. [8], [9]
Pollux, XII. [266]
Pons-Brooks comet, XIII. [291]
Postulates (of Ptolemy), II. [47]
Postulates (of Coppernicus), IV. [76]
Praesepe, XII. [260]
Precession (of the equinoxes), II. [42], [50]; III. [58], [59], [62], [68]; IV. [73], [83], [84], [85]; V. [104], [112]; VI. [129]; IX. [188], [192]; X. [213-215], [218], [221]; XI. [228], [232], [248]; XIII. [277], [280]
Prima Narratio (of Rheticus), IV. [74]; V. [94]
Primum Mobile, III. [68]
Principia (of Descartes), VIII. [163]
Principia (of Newton), IV. [75]; VIII. [152]; IX. [164], [177-192], [195]; X. [196], [199], [200], [213]; XI. [229], [234], [235], [240]
Principles of Philosophy (of Descartes), VIII. [163]
Probabilités, Théorie Analytique des (of Laplace), XI. [238]
Problem of three bodies. See Three bodies, problem of
Prodromus Cometicus (of Hevel), VIII. [153]
Prominences, XIII. [301], [302], [303]
Proper motion (of stars), X. [203], [225]; XII. [257], [265]; XIII. [278], [280]
Prosneusis, II. [48]; III. [60]; IV. [85]
Prussian Tables, V. [94], [96], [97], [99]; VII. [139]
Pythagoreans, II. [24]; IV. [75]
Quadrant, V. [99]; X. [218], [225] n
Quadrature, II. [48]; III. [60]; V. [111]
Quadrivium, III. [65]
Recherches sur différens points (of D’Alembert), XI. [233], [235]
Recherches sur la précession (of D’Alembert), XI. [215]
Reduction of observations, X. [198], [218]; XIII. [277]
Reflecting telescopes, IX. [168]; XII. [251-255]
Refracting telescopes, IX. [168]. See also Telescopes
Refraction, II. [46]; III. [68]; V. [98], [110]; VII. [138]; VIII. [159], [160]; X. [217], [218], [223]; XIII. [277]
Relative motion, principle of, IV. [77]; IX. [186] n
Renaissance, IV. [70]
Results of Astronomical Observations (of John Herschel), XIII. [308]
Retrograde motion, I. [14]
Reversing stratum, XIII. [303]
Reviews of the heavens, XII. [252], [253]
Revival of Learning, IV. [70]
Rhea, VIII. [160]
Rigel, III. [64]
Right ascension, II. [33], [39]; X. [198], [218]; XIII. [276]
Rills, XIII. [296]
Rings of Saturn. See Saturn, rings of
Rotation of the celestial sphere. See Daily motion
Rotation of the earth, sun, Mars, etc. See Earth, Sun, Mars, etc., rotation of
Royal Astronomical Society. See Astronomical Society, Royal
Royal Society, IX. [166], [174], [177], [191], [192]; X. [201], [202], [206], [208]; XII. [254], [256], [259], [263]; XIII. [292], [308]
Rudolphine Tables, V. [94]; VII. [148], [151]; VIII. [156]
Ruler, I. [16]
Running down of the solar system, XIII. [293], [319]
Saggiatore (of Galilei), VI. [127]
Sappho, XIII. [281]
Saros, I. [17]; II. [43]
Satellites, VI. [121], [127], [129], [133]; VII. [145], [150]; VIII. [154], [160], [162]; IX. [170], [183-185]; X. [210], [216]; XI. [228], [248]; XII. [253], [255], [267]; XIII. [272], [283], [295], [296], [297], [318], [320]. See also Jupiter, Saturn, etc., satellites of
Satellites, direction of revolution of, XI. [250]; XIII. [295], [318]
Satellites, rotation of, XI. [250]; XII. [267]; XIII. [297]
Saturn, I. [14-16]; II. [25], [51]; IV. [81], [87]; V. [99]; VI. [123]; VII. [136] n, [142], [144]; VIII. [154], [156]; IX. [183], [185], [186]; X. [204]; XI. [228], [231], [235], [236], [243-246]; XII. [253], [267]; XIII. [288], [297]. See also the following headings
Saturn, mass of, IX. [185]
Saturn, rings of, VI. [123]; VIII. [154], [160]; XI. [228], [248]; XII. [267]; XIII. [295], [297]
Saturn, rotation of, XII. [267]; XIII. [297]
Saturn, satellites of, VIII. [154], [160]; IX. [184]; XI. [228]; XII. [253], [255], [267]; XIII. [295], [297], [307]
Scientific method, II, [54]; VI. [134]; IX. [195]
Seas (on the moon), VI. [119]; VIII. [153]; XIII. [296]
Seasons, I. [3]; II. [35], [39]; IV. [82]; XI. [245]
Second (angle), I. [7]
Secular acceleration of the moon’s mean motion, X. [201]; XI. [233], [234], [240], [242]; XIII. [287]
Secular inequalities. See Inequalities, secular
Selenographia (of Hevel), VIII. [153]
Selenotopographische Fragmente (of Schroeter), XII. [271]
Sequences, method of, XII. [266]
Shadow of earth, moon. See Eclipses
“Shining-fluid” theory, XII. [260]; XIII. [310], [311]
Shooting stars. See Meteors
Short-period comets, XIII. [291]
Sidereal month, II. [40]
Sidereal period, IV. [86], [87]
Sidereal system, structure of, XII. [257], [258], [259-262]; XIII. [317]
Sidereal year, II. [42]
Sidereus Nuncius (of Galilei), VI. [119-122]
“Sights,” V. [110]; VIII. [155]; X. [198]
Signs of the zodiac, I. [13]
Sine, II. [47] n; III. [59] n, [68] n
Sirius, XIII. [316] n
Solar eclipse. See Eclipse
Solar system, stability of, XI. [245]; XIII. [288], [293]
Solstices, I. [11]; II. [36], [39], [42]
Solstitial points, I. [11]
Space-penetrating power, XII. [258]
Spanish astronomy, III. [61], [66]
Spectroscope, XIII. [299]. See also Spectrum analysis
Spectrum, spectrum analysis, IX. [168]; XIII. [273], [299-302], [303], [304], [306], [309], [311-314], [317], [318]
Sphaera Mundi (of Sacrobosco), III. [67]
Sphere, attraction of, IX. [173], [182]; XI. [228]
Sphere, celestial. See Celestial sphere
Sphere, doctrine of the. See Spherics
Spheres, celestial, crystal. See Celestial spheres
Spheres, music of the, II. [23]; VII. [144]
Spherical form of the earth, moon. See Earth, Moon, shape of
Spherics, II. [33], [34]
Spica, II. [42]
Spiral nebulae, XIII. [310]
Stability of the solar system, XI. [245]; XIII. [288], [293]
Stadium, II. [36], [45], [47]
Star-atlases, star-maps, I. [12] n; X. [198], [223]; XII. [259], [266]; XIII. [280], [294]
Star-catalogues, II. [32], [42], [50]; III. [62], [63]; IV. [83]; V. [98], [107], [110], [112]; VIII. [153]; X. [198], [199], [205], [218], [223-225]; XII. [257]; XIII. [277], [280], [316]
Star-clusters, VI. [120]; X. [223]; XII. [258], [259], [260], [261]; XIII. [307], [308], [310], [311], [318]
Star-gauging, XII. [258]; XIII. [307]
Star-groups. See Constellations
Stars, I. [1], [5], [7-10], [12-15], [18]; II. [20], [23-26], [29], [30], [32], [33], [39], [40], [42], [45-47], [50]; III. [56], [57], [62], [68]; IV. [73], [78], [80], [86], [89], [92]; V. [96-100], [104], [105], [110]; VI. [120], [121], [129]; VIII. [155], [157], [161]; IX. [186] n; X. [198], [199], [203], [207-214], [218], [223]; XI. [228]; XII. [253], [257-266], [267]; XIII. [272], [277-280], [283], [304], [306-318], [320]. See also the preceding and following headings
Stars, binary. See Stars, double and multiple
Stars, brightness of, II. [42]; XII. [258], [266]; XIII. [278], [280], [316], [317]. See also Stars, variable
Stars, circumpolar, I. [9]; II. [35]
Stars, colours of, XII. [263]; XIII. [309]
Stars, distances of, I. [7]; II. [30], [32], [45], [47]; IV. [80], [92]; V. [100]; VI. [117], [129]; XI. [228]; XII. [257], [258], [265], [266]; XIII. [278], [279], [317]. See also Parallax, stellar
Stars, distribution of, XII. [257], [258]. See also Sidereal system, structure of
Stars, double and multiple, XII. [256], [263], [264]; XIII. [306-308], [309], [314], [320]
Stars, magnitudes of, II. [42]; XII. [266]; XIII. [280], [316]. See also Stars, brightness of
Stars, motion of. See Stars, proper motion of, and Daily motion (of the celestial sphere)
Stars, names of, I. [12], [13]; III. [64]
Stars, nebulous, X. [223]; XII. [260], [261]
Stars, new, II. [42]; V. [100], [104]; VI. [117], [129]; VII. [138]; XII. [266]; XIII. [312]
Stars, number of, I. [7] n; XIII. [280]
Stars, parallax of. See Parallax, stellar
Stars, proper motion of, X. [203], [225]; XII. [257], [265]; XIII. [278], [280]
Stars, rotation of, XII. [266]
Stars, spectra of, XIII. [311-314], [317]
Stars, system of. See Sidereal system, structure of
Stars, variable, XII. [266], [269]; XIII. [307], [312], [314], [315]
Stationary points, I. [14]; II. [51]; IV. [88]
Stjerneborg, V. [101]
Summer solstice, I. [11]. See also Solstices
Sun, I. [1], [4], [10], [13], [14], [16]; II. [21], [23-26], [28-30], [32], [35], [36], [40], [43], [45], [48], [51]; III. [68], [69]; IV. [73], [75], [77], [79-82], [85-90], [92]; V. [98], [103], [105], [110], [111]; VI. [119], [121], [123], [124], [126], [127], [129], [132]; VII. [136], [139-141], [144-146], [150]; VIII. [153], [154], [156]; IX. [170], [172-175], [181], [183-186], [188-190], [194]; X. [198], [200], [202], [205], [210], [213], [223], [227]; XI. [228], [235], [236], [240], [243], [245], [250]; XII. [257], [265], [268], [269]; XIII. [272], [278], [283], [288], [292-294], [297], [298-303], [304], [305], [307], [319], [320]. See also the following headings
Sun, angular or apparent size of, II. [32], [38], [39], [41], [43], [46] n, [48]; IV. [73], [90]; V. [105] n
Sun, apparent flattening of, II. [46]
Sun, distance of, I. [15]; II. [24], [25], [30], [32], [38], [41], [43], [45], [48], [49], [51]; IV. [81], [85], [86], [87], [90], [92]; V. [111]; VII. [144], [145]; VIII. [156], [161]: IX. [185], [188]; X. [202], [205], [223], [227]; XI. [235]; XIII. [278], [281-284]
Sun, eclipses of. See Eclipses
Sun, heat of, XII. [268], [269]; XIII. [303], [307], [319]
Sun, mass of, IX. [183], [184], [185], [189]; XI. [228]; XIII. [282]
Sun, motion of, I. [3], [5], [8], [10], [11], [13], [15-17]; II. [20], [21], [24-26], [35], [37], [38], [39], [40], [42], [43], [47], [48], [51]; III. [59]; IV. [73], [77], [79], [85], [86], [87], [92]; V. [104], [105], [111]; VI. [121], [126], [127], [132]; VIII. [160]; IX. [186]; X. [223]; XI. [235]; XII. [265]; XIII. [288]
Sun, parallax of, II. [43]; V. [98], [110]; VII. [145]; VIII. [161]; X. [223], [227]; XIII. [281-284]. See also Sun, distance of
Sun, rotation of, VI. [124]; VII. [150]; XI. [250]; XIII. [297], [298], [302]
Sun, size of, II. [32]; IV. [85]; VII. [145]; IX. [173]; XIII. [319]
Sun, tables of. See Tables, solar
Sun-dials, II. [34]
Sun-spots, VI. [124], [125]; VIII. [153]; XII. [268], [269]; XIII. [298], [300], [302], [303]
Superior planets, I. [15]; IV. [87], [88]. See also Mars, Jupiter, etc.
Svea, XIII. [294]
Synodic month, II. [40], [43]
Synodic period, IV. [86], [87]
Synopsis of Cometary Astronomy (of Halley), X. [200]
Systema Saturnium (of Huygens), VIII. [154]
Système du Monde (of Laplace), XI. [238], [242] n, [250]
Système du Monde (of Pontécoulant), XIII. [286]
Table Talk (of Luther), IV. [73]
Tables, astronomical, III. [58], [60-63], [66], [68]; IV. [70]; V. [94], [96], [97], [99], [110]; VII. [139], [148]; VIII. [156], [160]; X. [216], [217]; XIII. [277]. See also the following headings
Tables, lunar, II. [48]; III. [59]; X. [204], [216], [217], [226]; XI. [233], [234], [241]; XIII. [286], [290]
Tables, planetary, III. [63]; V. [108], [112]; VII. [142], [143]; X. [204], [216]; XI. [235], [247]; XIII. [288], [289], [290]
Tables, solar, III. [59]; IV. [85]; V. [111]; VIII. [153]; X. [224], [225], [226]; XI. [235], [247]; XIII. [290]
Tables, Alfonsine, III. [66], [68]; V. [94], [96], [99]
Tables, Hakemite, III. [60], [62]
Tables, Ilkhanic, III. [62]
Tables, Prussian, V. [94], [96], [97], [99]; VII. [139]
Tables, Rudolphine, V. [94]; VII. [148], [151]; VIII. [156]
Tables, Toletan, III. [61], [66]
Tables de la Lune (of Damoiseau), XIII. [286]
Tabulae Regiomontanae (of Bessel), XIII. [277]
Tangent, III. [59] n, [68] n
Tartars, Tartar astronomy, III. [63]
Tebbutt’s comet, XIII, [305]
Telescope, III. [67]; VI. [118-124], [134]; VII. [138]; VIII. [152-155]; IX. [168]; X. [207], [213], [218]; XII. [251], [252-258], [260], [262], [271]; XIII. [274], [300], [301], [306], [310], [317]
Theoria Motus (of Gauss), XIII. [276]
Theoria Motuum Lunae (of Euler), XI. [233]
Théorie de la Lune (of Clairaut), XI. [233]
Théorie ... des Probabilités (of Laplace), XI. [238]
Théorie ... du Système du Monde (of Pontécoulant), XIII. [286]
Theory of the Moon (of Mayer), X. [226]
Theory of the Universe (of Wright), XII. [258]
Thetis, VIII. [160]
Three bodies, problem of, XI. [228], [230-233], [235]
Tidal friction, XIII. [287], [292], [293], [320]
Tides, VI. [130]; VII. [150]; IX. [189]; XI. [228-230], [235], [248]; XIII. [287], [292], [293], [297], [320]
Time, measurement of, I. [4], [5], [16]. See also Calendar, Day, Hour, Month, Week, Year
Titan, VIII. [154]
Titania, XII. [255]
Toletan Tables, III. [61], [66]
Torrid zones, II. [35]
Total eclipse, II. [43]; VII. [145]; X. [205]; XIII. [301]. See also Eclipses
Transit instrument, X. [218], [225] n
Transit of Mercury, X. [199]
Transit of Venus, VIII. [156]; X. [202], [205], [224], [227]; XIII. [281], [282], [284]
Translations, III. [56], [58], [60], [62], [66], [68]
Transversals, V. [110] n
Trepidation, III. [58], [62], [68]; IV. [84]; V. [112]
Trigonometry, II. [37] n, [47] n; III. [59] n, [64] n, [68] n; IV. [74]
Trivium, III. [65]
Tropical year, II. [42]
Tuttle’s comet, XIII. [291]
Twilight, III. [69]
Twinkling of stars, II. [30]
Two New Sciences (of Galilei), VI. [133], [134] n; VIII. [152]
Tychonic system, V. [105]; VI. [127]
Umbra (of sun-spots), VI. [124]; XII. [268]
Uniform acceleration, VI. [133]. See also Acceleration
Uraniborg, V. [101]
Uranometria Nova Oxoniensis, XIII. [316]
Uranus, XII. [253], [254], [255], [267]; XIII. [276], [288], [289], [297]
Uranus, rotation of, XIII. [297]
Uranus, satellites of, XI. [250] n; XII. [255], [267]; XIII. [272], [295]
Variable stars. See Stars, variable
Variation (of the moon), III. [60]; V. [111]; VII. [145]
Variation of elements or parameters, XI. [233] n, [236], [245]
Variations, calculus of, XI. [237] n
Vega, III. [64]
Venus, I. [14-16]; II. [25], [26], [45], [47], [51]; III. [68]; IV. [75], [81], [86], [87]; V. [98], [100], [103]; VI. [121], [123]; VII. [136] n, [139], [142], [144]; VIII. [154]; IX. [181], [185]; X. [223], [227]; XI. [235], [245]; XII. [267], [271]; XIII. [282], [297]. See also the following headings
Venus, mass of, XI. [235], [248]
Venus, phases of, VI. [123], [129]
Venus, rotation of, VIII [160]; XII. [267]; XIII. [297]
Venus, transits of. See Transits of Venus
Vernal equinox, I. [11]. See also Equinoxes
Vernier, III. [69] n
Vertical, II. [33]; X. [221]; XIII. [285]
Vesta, XIII. [294]
Victoria, XIII. [281]
Virtual velocities, XI. [237] n
Vortices, VIII. [163]; IX. [178], [195]
Wave, wave-length (of light) XIII. [299], [300], [302]
Weather, prediction of, II. [20]; VII. [136]
Week, I. [16]
Weight, VI. [116], [130]; IX. [180]
Weights and Measures, Commission on, XI. [237], [238]
Whetstone of Witte (of Recorde), V. [95]
Winter solstice, I. [11]. See also Solstices
Year, I. [3], [4], [16]; II. [19-22], [42], [47]; III. [66]; V. [111]
Year, sidereal, II. [42]
Year, tropical, II. [42]
Zadkiel’s Almanack, I. [18] n
Zenith, II. [33], [35], [36], [46]; III, [64]; X. [221]
Zenith-sector, X. [206]
Zodiac, I. [13]; X. [224]
Zodiac, signs of the, I. [13]
Zodiacal constellations, I. [13]
Zones of the earth, II. [35], [47]

FOOTNOTES:

[1] In our climate 2,000 is about the greatest number ever visible at once, even to a keen-sighted person.

[2] Owing to the greater brightness of the stars overhead they usually seem a little nearer than those near the horizon, and consequently the visible portion of the celestial sphere appears to be rather less than a half of a complete sphere. This is, however, of no importance, and will for the future be ignored.

[3] A right angle is divided into ninety degrees (90°), a degree into sixty minutes (60′), and a minute into sixty seconds (60″).

[4] I have made no attempt either here or elsewhere to describe the constellations and their positions, as I believe such verbal descriptions to be almost useless. For a beginner who wishes to become familiar with them the best plan is to get some better informed, friend to point out a few of the more conspicuous ones, in different parts of the sky. Others can then be readily added by means of a star-atlas, or of the star-maps given in many textbooks.

[5] The names, in the customary Latin forms, are: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricornus, Aquarius, and Pisces; they are easily remembered by the doggerel verses:—

The Ram, the Bull, the Heavenly Twins,