INDEX.
Aberration of light, 93.
Adams, Prof., discovery of Neptune , 410,4J4.
JEthra, minor planet, orbit of, 207, 273.
Airy, Sir G-. B., Harton colliery experi-ment, 217 ; rotation of Jupiter , 310 ;solar prominences, 32.
Arctic latitudes, attained by explorers,190.
Artillery experiments, and the Earth ’srotation, 200.
Asteroids, 2(5(5 (see Planets , Minor).
Astronomy, nautical, and Gresham Col-lege , 93.
Atmosphere, lunar, 79 ; of Venus , 105.
Aurora, the, and Sun -spots, 39.
Baily, Mr., the Cavendish experiment, 214.
Ball, the Messrs., and Saturn ’s ring, 3(57.
Beck and Co., Messrs., stereographs of theMoon , 81.
Bianchini, observations of Venus , 1(53.
Bode’s so-called law of planetary dis-tances, 123 ; its application to Uranus ,3915; to Neptune. 314; to Jupiter ’ssatellites. 329 ; to Saturn ’s, 518(5.
Bond, Prof., discovery of Saturn ’s ring C,3(58 ; disappearances of Saturn ’s rings,372.
Calendar, the, and the Moon , 94.
Carlos, Rev. E. S., his translation of theSidereal Messenger , 321.
Carrington, observations of Sun -spots, 33.
Cassini (I), J. D., apparent paths of theplanets, 101 j observations of Venus ,1(53; rotation of Jupiter , 311 ; duplicityof Saturn ’s ring, 3(57.
Cavendish experiment, the, 208—21(5.
Centrifugal force, 203.
Ceres , minor planet, colour of light of,278 ; discovered, 2(59 ; distance of, 207 ;size of, 278.
Chart of Mars (see frontispiece).
Chemical elements, dissociation of, 2(5,45.
Christie, Mr. (Astronomer Royal), tran-sit of Mercury in May 1878, 151.
Colbert, Prof., sizes of Jupiter ’s satellites,32(5.
Comets, affected by planets, 41(5 ; be-longingtothesolar system,424; cometsand nltra-Neptunean planets, 41(5.
Commercial panics and Sun -spots, 40.
Conic sections, 281.
Conjunction, inferior and superior, 125.
Copernican theory, the, 117,118; tested,127, 324 ; and Jupiter ’s satellites, 324.
Corder, Mr., drawings of Jupiter , 309.
Corona, the, 43; Mercury seen on the. 153.
Corporation of London , the, library of,l 15.
Crabtree, William, 4.
Creswick, Mr., transit of Mercury, 151.
Croll, Dr., “ Climate and Time,” 187.
Crystal spheres, 11(5.
Cycles and epicycles, of Ptolemy , 107 ; ofMars, Jupiter, and Saturn , 110 ; ofVenus and Mercury, 107.
Darwin, Mr., on prehistoric tides, 92.
Day, the, its length, 175; secular change| in, 225 ; sidereal and solar, 222, 228.
Daylight observations of Venus , 157,102.
Dawes, Mr., discovers Saturn ’s ring C,3(58.
Dearborn Observatory, observations ofJupiter at, .308, 312, 317.
Declination, 134.
Deiinos, satellite of Mars , 257.
De U Rue, drawing of Jupiter , 304; ofSaturn , 358, 3(59.
Denning, Mr., rotation of spots on Jupi-ter , 312; announces the Great RedSpot , 300.
Diameter, the, of the Earth , 228.
Distances, of the planets, 117 ; Bode’s so-called law of, 123 ; method of lunar, 93.
Duponchel, M., the Sun -spot period, 557.
Earth , the, axis of, its inclination, 228;centre of gravity of, and of the Moon ,54 ; centrifugal effect of rotation of,205, 220 ; deusitv of, 210, 228; itsday, 222, 225, 228 ; its diameters, 228;eccentricity of its orbit, secular changein the, 188 ; flattened at the poles, 195;fluid in the past, 207 ; gravity upon,diminished at the equator, 205 ; heat,internal, of, 218; interior of, 220;maguetism of, and Sun -spots, 39 ; near-est to the Sun , when, 189, 228 ; rotationof, proofs of, 197 ; seasons of, 17.3, 228 ;seen from the Moon , 80 ; shape of, 193 ;solidity of, 219 ; tides upon, 55 ; volumeof, 228; weight of, methods of deter-mining, 207, 228.
Eccentricities, of the orbits of theplanets, 120; of those of the minorplanets, 273.
Eclipses, lunar, 82 ; frequency of, 89;number in any year, 87.
Eclipses, solar, 87 ; of August 17th,18(58, 92 ; of July 29th, 1878, 28; of