Calippic period, _a._ 123. Caloric, _b._ 143. Canicular period, _a._ 118. Canon, _a._ 147. Capillary action, _a._ 377. Carbonic acid gas, _b._ 276 Carolinian tables, _a._ 304. Catasterisms, _a._ 158. Categories, _a._ 206. Cathïon, _b._ 298. Cathode, _b._ 298. Catïon, _b._ 298. Causes, Material, formal, efficient, final, _a._ 73. {34} Centrifugal force, _a._ 330. Cerebral system, _b._ 463. Chemical attraction, _b._ 264. Chyle, _b._ 453. Chyme, _b._ 453. Circles of the sphere, _a._ 128. Circular polarization, _b._ 82, 119. " progression (in Natural History), _b._ 418. Civil year, _a._ 117. Climate, _b._ 146. Coexistent vibrations, _a._ 376. Colures, _a._ 131. Conditions of existence (of animals), _b._ 483, 492. Conducibility, _b._ 143. Conductibility, _b._ 143. Conduction, _b._ 139. Conductivity, _b._ 143. Conductors, _b._ 194. Conical refraction, _b._ 124. Conservation of areas, _a._ 380. Consistence (in Thermotics), _b._ 160. Constellations, _a._ 124. Constituent temperature, _b._ 170. Contact-theory of the Voltaic pile, _b._ 295. Cor (of plants), _b._ 374. Cosmical rising and setting, _a._ 131. Cotidal lines, _a._ 460. Craters of elevation, _b._ 556. Dæmon, _a._ 214. D'Alembert's principle, _a._ 365. Day, _a._ 112. Decussation of nerves, _b._ 462. Deduction, _a._ 48. Deferent, _a._ 175. Definite proportions (in Chemistry), _b._ 285. Delta, _b._ 546. Dephlogisticated air, _b._ 273. Depolarization, _b._ 80. " of heat, _b._ 155. Depolarizing axes, _b._ 81. Descriptive phrase (in Botany), _b._ 393. Dew, _b._ 177. Dichotomized, _a._ 137. Diffraction, _b._ 79. Dimorphism, _b._ 336. Dioptra, _a._ 165. Dipolarization, _b._ 80, 82. Direct motion of planets, _a._ 138. Discontinuous functions, _b._ 36. Dispensatoria, _b._ 366. Dispersion (of light), _b._ 126. Doctrine of the sphere, _a._ 130. Dogmatic school (of medicine), _b._ 439. Double refraction, _b._ 69. Eccentric, _a._ 145. Echineis, _a._ 190. Eclipses, _a._ 135. Effective forces, _a._ 359. Elective attraction, _b._ 265. Electrical current, _b._ 242. Electricity, _b._ 192. Electrics, _b._ 194. Electrical tension, _b._ 242. Electro-dynamical, _b._ 246. Electrodes, _b._ 298. Electrolytes, _b._ 298. Electro-magnetism, _b._ 243. Elements (chemical), _b._ 309. Elliptical polarization, _b._ 122, 123. Empiric school (of medicine), _b._ 439. Empyrean, _a._ 82. Enneads, _a._ 213. Entelechy, _a._ 74. Eocene, _b._ 529. Epicycles, _a._ 140, 145 Epochs, _a._ 46. Equant, _a._ 175. Equation of time, _a._ 159. Equator, _a._ 130. Equinoctial points, _a._ 131. Escarpment, _b._ 537. Evection, _a._ 171, 172. Exchanges of heat, Theory of, _b._ 143.