INDEX. 53f 



Charafters of animals, 464. How they may be modified, ibid. Individual charaflers 

 often ftrongly marlsed, 465. 



Chermes. The female of this infeft depofits her eggs in the leaves of trees, and 

 produce thofe protuberances called galls, 92. 



Children. See infants. The gradual progrefs of their inftinfts, 435. 



Chryfalids. A defcription of them, 292. 



Cimex. See bug. 



Cinyps. A fly whofe eggs produce galls in the oak, 94. 



Cleanlinefs. Its importance to health, 130. 



Cock. The game-cock a moft intrepid animal, 242. 



Cockroach. Some account of it, 91. 



Colours. The origin of the primary ones, 1 80. A mixture of them produces wliite- 

 nefs, ibid. Colour no fpecific character of plants, 255, 257, Colours of animals 

 greatly variegated by domeftication, 462. 



Coleopterous infefts defcribed, 89. 



Combs. See bees, and wafps. 



Crabs, An account of the migration of land-crabs, joo. 



Crows. Experiments on their digeftive powers, 230. Endeavour to break grain be- 

 fore they fwallow it, 231. 



Cruft«ceous fiflies caft their (hells annually, 290. 



Cuckoo makes no neft, and neither hatches nor feeds her young, 323. 



Culex. See gnat. 



Cuttle-fi£h. Its ftrufture and manners, 100. 



D 



Death. All animals and vegetables fubjeft to diflblutlon, 41, 287. Dfe cannot be 

 fupported without the intervention of death, 390. There is a wonderful balance in 

 the fyftem of animal deftrudtion and multiplication, 393. The general caufes of 

 death, 505. 



Deer. Their artifices In efcaping the dogs, 400. 



Deity neceflarily one, 526. 



Digeftion. The organs of digeftion defcribed, 48. The mechanical and chemical theo- 

 ries of it, 224. Viftuals diflblved by the gaftric juice, 226. Whether the fmall 

 ftones fwallowed by birds affift their digeftion, 228. Greatly aflifted by chewing, or 

 by comminution, 231. Dr Stevens's experiments upon digeftion in man and other 

 animals, 232. After death, the ftomach is diflblved by its own gaftric juice, 235. 

 Bees wax a refult of digeftion, 339. 



Dipterous infefts defcribed, 96. 



3X2 Docility 



