Part 44

Corona Borealis, or the Northern Crown, 336.

Corona Borealis, new star in, 363.

Corvus, or the Crow, 339.

Crystalline spheres, 41.

Cycles and epicycles, 42.

Cygnus, or the Swan, 338.

Day and night, 57. civil, 77. lunar, 108. sidereal, 74. solar, 74.

Declination, 16.

Deimos, satellite of Mars, 239.

Delphinus, or the Dolphin, 338.

Deneb, star in Cygnus, 338, 370.

Dione, satellite of Saturn, 259.

Dipper, the Great, 330, 366, 369, 370. the Little, 331. the Milk, 347.

Dissociation, 163.

Dominical Letter, the, 81.

Draco, or the Dragon, 331.

Earth, density of, 85. flattened at poles, 55. form of, 53. in space, 56. seen from moon, 109. size of, 55. weight of, 83.

Eccentric, the 43.

Eccentricity, 46.

Eclipses, 210. annular, 219. lunar, 210, 214. solar, 216.

Ecliptic, the, 27. obliquity of, 28.

Ellipse, the, 45, 49.

Elongation, of planet, 130.

Enceladus, moon of Saturn, 259.

Epicycles, 42.

Epicycloid, 107.

Epsilon Lyræ, a double star, 356.

Equator, the celestial, 7.