Part 24

Cobweb, simile, 26.

Cold: and eclipses, 40; in planets, 136.

Colorado, 50.

Colors: in eclipses (q. v.), 65; mental, 70, 71; in Jupiter (q. v.), 127; in moon (q. v.), 168; in stars (q. v.), 227; spectrum (q. v.), 236.

Comet-hunters, 204, 207.

Comets: chapter, 199–220; Donati’s, 201, 204, 205, 207, 209, 217; one part, 203; parts and name, 208; tail (q. v.), 208, 211; diameter and parts, 216; spectroscope, elements, dread, 219; numerous, stone, 219, 220; kernel, 220; (1858), 213–216; (1866), 200.

Common, A. A., 239, 247.

Compass, 86.

Connecticut Observations, 186, 242.

Converter, 104–108.

Coral, 151.

Corn, 111. (See Grain.)

Corona, 7, 36, 37, 40, 41, 43, 45–52, 55, 56, 59, 60–62.

Cotton-mill, 74.

Counting, 94.

Cracks, celestial, 163.

Craters, 164. (See special names.)

Crystalline Structure, 4, 23–27.

Cyclones, 24, 31, 32, 68.

Decay, 248, 249.

Delambre’s History, 207.

De la Rue’s Engraving, 125.

Delfthaven, 5.

Denning’s Theory, 197.

Diamonds, melted, 103.

Dies Iræ, 249.

Dipper, 207, 208. (See Great Bear, Polar.)

Diurnal Oscillation, 87.