550 INDEX. 



a great refemblance to that of man, 63. Peculiarities la 

 the fl:ru(Sture of carnivorous animals, 66 ; and of the her- 

 bivorous tribes, 67. Sketch of the ftrufture and difpo- 

 fitions of amphibious animals 75, Sketch of the ftruc- 

 ture of birds, 80. Of the ftrucT:ure of fifhes, 87. The 

 comparative flrength of animals depends not on ftructure 

 alone, 111. Of their refpiration, 112. Moft animals ca- 

 pable of exprefling their wants and defires, 118. Of their 

 motions, 140, &c. The notion that animals are machines 

 abfurd, 165. Of the infancy of animals, 202. The^r 

 general diffufion over the globe owing partly to the diver- 

 fitv of their appetites for food, 225. Of the fexes 

 of' animals, 242. Of the puberty of animals, 269. All 

 animals undergo changes at the age of puberty, 272. 

 Their attachment to their young, 278. This attachment 

 ceafes, in fome animals, as foon as the young can provide 

 for themfelves, 282. Many of them marry or pair, ibid. 

 Advantages derived from the variety of feafons obferved 

 by different animals, 285. Table of their relative fecundi- 

 ty, 288. Of their transformations, 291. AH animals un- 

 dergo changes, ibid, Cruftaceous tribes annually caft their 

 fhells, 294. Of the habitations of animals, 315. Opera- 

 tions of animals referred by fome authors to mechanical 

 impulfes, 340. Of their hoflilities, 378. Man the moll: 

 univerfal deftroyer of animal life, 380. Some animals de- 

 vour their own fpecies, 388. Advantages derived from 

 animals preying upon one another, 393. Profufion of an- 

 imal life feems to be a general intention of Nature, 396. 

 There is a wonderful balance in the fyftem of animal de- 

 ftrudion j\nd multiplication, 397. Reftraints againft nox- 

 ious inundations of particular f])ecies, ibid. Animals not 

 deftined for individual exiftence alone, 401. Of the arti- 

 fices of animals, 403. Of the fociety of animals, 418. Of 

 gregarious animals who carry on no common operations, 

 436. Different fpecies aiTociate, 437. Of iheir docility, 

 439. Animals of the ox kind dull and phlegmatic, 460. 

 Much influenced by climate and dom.eflication, 463, 8cc. 

 Of the characters of animals, 469. Of their principal of 

 imitation, 472. Of the migration of animals, 476. Of 

 their longevity, 506, &c. Thofe which grow quickly foon 

 perifh, 510. All animals perfe<ft according to their deC 

 tination, 522. 



