IN D E X, 549- 



B 



Beavers. Account of their manners and architeiflure, 313. Live peaceably in Society 

 witli each other, 316. Lay up proviGons for winter, 317. 



Bees. The general ftrufture of the honey-bee, 95. The mafon-bee fometiraes 

 moves in a retrograde direftion, 143. Some of their inftinfts enumerated, 147. 

 Wood-piercing bee makes a neft in old timber, 148. When pinched for room, they 

 augment the depth of their cells, 151. Neft of the mafon-bee, 326. Ichneumon 

 flies deftruflive to bees, 329, Operations of wood-piercing bees, ibid. Of other fo- 

 litary bees, 333. Operations and oeconomy of the honey-bee, 336. The figure and 

 mode of making their cells, 337. Their cells are deftined to anfwer different pur- 

 pofes, 338. Their divifion of labour, ibid. Their wax a refult of a digeftive pro- 

 cefs, 339. Eat the farina of flowers, ibid. 340. Require a warm habitation, 341. 



■ Mend their hives with propolis, 342. Amafs great quantities of honey, 343. Occa- 

 fionally feed one another, ibid. Eggs of the female impregnated by the males after 

 they are depofited in the cells, 344. Can transform a common fubjeft into a queen 

 or female, 347. May be multiplied without end, 348. The neuters maffacre the 

 males, 387. Have frequent combats, 387. Their fociety of a monarchical nature, 



421. The Count de BufFon's mechanical theory of the operations of bees examined, 



422, &c. 



Beetle tribe of infefts. An account of their form and manners, 89. Many of them, 

 when terrified, flmulate death, 149. Remarkable differences between fome of the 

 males and females, 241. 



Beings (hould not be contemplated individually, but by their rank, 525. None fuperior 

 to man could exift in this world, 526. 



Birds. Sketch of their ftrudlure, 70. Their form adapted to their mode of living, 71, 

 Of granivorous birds, 72. Analogy between them and herbivorous quadrupeds, 74. 

 Of carnivorous birds, 75, 380. Birds refpire by almoft every part of their bodies, 

 and even by the bones, iii. One ufe of this ftrufture, 113. Analogy between birds 

 and fiflies, 117. When not reftrained, uniformly build nefts in the fame form, and 

 of the fame materials, 149. The great comminuting force of fome of their ftomachs, 

 227. Whether the fmall ftones they fwallow aflift the digeftion of their food, 228. 

 Among birds of prey, the females are larger, ftronger, and more beautiful, than the 

 males, 241. The reverfe takes place among the gallinaceous tribes, 242. Many of 

 them pair, 277, 279. Changes they undergo after being hatched, 289. Of their 

 nidification, 319, 325. Of their artifices, 408. Some of them may be taught arti- 

 culation, 458. Of their migration, 473, &c. Of their longevity, 51 1. 



Bifons. See oxen. 



Blatta. See Cockroach, 9 1 . 



t 3 X Blood. 



