Chimborazo, Mount, 56
China, observations made in, 104
Chladni, experiment of, 147
Christian era, the, 100
Chronology of the visible heavens, 389
Climate, 257, 267, 271
Coal, 83
Cold, 264, 266
Colours, prismatic, 172 et seq.; of the stars, 393
Columbus and Lerius, 280, 314
Comets, theory of, and description of Encke’s and other remarkable comets, 67, 359 to 383
Compass, the mariner’s, 313, 330
Compression, doctrine of, 90
Conductors, electrical, 294, 298
Conjunction of planets, dates of, 46
Connexion of the physical sciences, conclusion, 413
Constellations, motion and revolution of, 391
Crystal, 212
Crystallization, 235, 243, 308
Curvature of the earth, 54
Day, the solar, 97
———, divisions of, 98, 107
Dew, phenomenon of, 240
Diameters of the sun and planets, 67
Diaphanous bodies, 213
Distances in the universe calculated, 47, 48, 66
Dynamics, principles of, 81; the theory of, 411
Ear, the, 142, 148
Earth, its rotation uniform, 21, 80; its circumference, 57; its fires, and heat from the sun, 82, 85; eccentricity of orbit, 85; whether cavernous, 90; theories, 95, 370
Earthquakes, the noise of, 151
Echo, 150
Eclipses, comparison of, 37, 40
——— description of lunar, 44
——— of Jupiter’s satellites is chronometrical, 30
Ecliptic, the, 94, 103
———, variation of the, 20
Egyptians, astronomy of the, 105
Elastic bodies, vibrations of, 153
Electricity, science and phenomena of, 151, 285 et seq. 303, 353
Electrics, Non, 289
Electro-magnetism, 324,330, 340, 343
Elevation of the earth at the equator, 51, 59
‘Ephemeris,’ the, 47
Equator, the, 50, 94, 265, 311
Equinox, vernal and autumnal, 41
