534 INDEX. 



Forms are perpetually changing, 307. See transformations. 

 Fox. His artifices and manners, 405. 

 Frogs. Undergo great changes in their form, 289. 

 Fulgora. See fire-fly. 



G 



Gad-fly, extremely Irouhlefome to cattle, both in its caterpillar and fly flate, 96. 



Gall-infefts. Defcription of their form and manners, 240. 



Galls. See chermes. The eggs of the cinyps give rife to thofe on oak leaves, 94, 

 How galls are formed, 296. 



Gaftric juice. See digeftion and ftomach. Its folvent power aflifted by chewing, 233. 

 No dead animal fubf>ance can refill its power, ibid. ; but it has no effeil upon live 

 animals, 234. Difi"olves the ftomach after death, 235. 



Generation. See multiplication. 



Gentoos. Live almofl; entirely on vegetables, 215. Their cafts founded in Nature, 

 521. 



Germs. Examination of Bonnet's theory of them, 213. See growth. 



Glow-worm. See worms. 



Glutton. His artifices and manners, 407. 



Gnat. Account of it, 96. 



Goat-fucker, a bird of pafTage, 477, 



Goofe. Its longevity. 



Gordius. See worms, 511. 



Granivorous birds. Sketch of their flruflure, 72. Analogous to herbivorous quadrUv 

 peds, 74. Their gentle manners, ibid. 



Growth of animals and vegetables extremely analogous, 25, &c. May be accelerated 

 or retarded by certain circumftances, 29. BufFon's theory of growth, 208. Nutri- 

 tion fuppofed to be effefted by the brain and nerves, 209. This notion rendered 

 improbable, 2 1 o. More probable that the nutritious particles of food are conveyed 

 and applied by the arteries, 21 1. Bonnet's theory of germs examined, 213, 214. 

 Our limited conceptions of the nature of growth and nouriftiment, 215. All animals 

 fuppofed to grow after birth, 222. The fpider-fly affords an exception, ibid. Re- 

 markable rapidity of growth in fome worms, 224. Animals, as well as plants, which, 

 quickly arrive at maturity, foon perilh, 509. 



Gryllus. Some account of it, 91. 



Guiney-pig contraifls a Ipofenefs when forced to eat coleworts for fome time, 219. 



H 



