414 



INDEX. 



Boletus igniarins, 102. 

 Boyle on motion, 9. 

 Brain and nerves, 391. 

 Brahminical philosophy, 245. 

 Brewster, Sir D., refers magnetism to 



the sun { 263. 

 . on magnetism, 24?. 

 Brown's doctrines of life, 395. 

 Butterfly, metamorphosis of, 389. 



CAIGNARD de la Tour state, 106. 

 Calorific transparency, 65. 



influence on plants, 376. 

 Calotype, the, 174. 

 Canton's phosphorus, 161. 

 Carbon, allotropic state of, 43. 

 Carboniferous plants, fossil, 339. 

 Carbonic acid, solid, 111. 



quantity in atmosphere, 311. 

 Cassini on magnetic variation, 246. 

 Catalysis, 280. 



Cell, organic, 361. 



Cellini, Benvenuto, 011 the carbuncle, 



159. 



Central sun, doctrine of a, 27. 

 Changes, physical, 290. 

 Chemical phenomena developing heat, 



42. 



decomposition producing heat, 97- 



combination by heat, 98. 



affinity suspended by heat, 109. 



radiations, 166. 



power of solar rays in the Tropics, 

 177. 



agency of luminous rays, 178. 



action influenced by magnetism, 

 252, 



forces, 270. 



elements, 272. 



proportions, 285. 



metamorphoses, 289. 



phenomena, 295. 



composition of atmosphere, 322. 



rays, action of, on germination, 375. 

 Chemistry, Electro, 206. 



of Nature, 270. 



Animal, 396. 



Chinese knowledge of magnet, 236. 



Chlorppbylle, formation of, 373. 



Chloride of sulphur, transparency of, 

 to heat, 65. 



Chlorine and hvdrogen combine by 

 light, 171. 



Chlorine in the ocean, 303. 



Cholera and electricity, 215. 



Choroid coat, the, 149. 



Chromatic lines on the earth, 133. 



Clay converted into slate by elec- 

 tricity, 227. 



Climate* of the earth, 350. 



Clock, Electrical, 233. 



Coal formation, theory of, 314. 



Cohesive force opposed to gravitation, 

 33. 



Cohesion and gravitation, 49. 



distinguished from metallization. 

 51. 



Cold, extreme, 110. 

 Colour of bodies, 132. 



changes of, in chemical combi- 

 nations, 290. 



-- blue, of sky, 320. 



of steam, 321. 



Colours, Newton's theory of, 135. 

 Coloured heat rays, 85. 

 Combining equivalents, 273. 



forces, 292. 

 Combination, laws of, 286. 



of forces, 330. 

 Combustion, 305. 

 Comets, 26. 



Condensation of gases, 290. 

 Conduction of heat, 69. 

 Conducting power of bodies for heat, 



89. 



Condition, change of chemical, 271. 

 Conversion of motion, 16. 

 Convection of heat, 69. 

 Cotyledons, use of the, 36S. 

 Coulomb on repulsion of atoms, 47. 

 Creation, oneness of, 406. 

 Cretaceous formations, 344. 

 Crosse on electricity, 227. 

 Crustaceans, metamorphosis of, 389. 

 Crust of the earth, 333. 

 Crystals, pseudomorphous, 54. 



