Caspian Sea, its periodic rise and fall, 297.

Cassini, Dominicus, on the zodiacal light, 139, 140; hypothesis on 141; his discovery of the spheroidal form of Jupiter, 164.

Cautley, Capt, and Dr. Falconer, discovery of gigantic fossils in the
Himalayas.

Cavanilles, first entertained the idea of seeing grass grow, 149.

Cavendish, use of the torsion balance to determine the mean density of the
Earth, 170.

Challis, Professor, on the Aurora, March 19 and Oct. 24th, 1847, see note by
Translator, 195, 199.

Chardin, noticed in Persia the famous comet of 1608, called "nyzek" or "petite lance," 139.

Charpentier, M., belemnites found in the primitive limestone of the Col de la Seigne, 261; glaciers, 329.

Chemistry as distinguished from physics, 62; chemical affinity, 63.

Chevandier, calculations on the carbon contained in the trees of the forests of our temperate zones, 281.