54S INDEX* 



Scorpion. Account of It, 108. 



Sea-nettle capable of being ingrafted, 50. 



Seal. Sketch of his manners, 76. 



Seafons. See love. 



Seeds. Analogies between them and the eggs of animals, 45. 



Seeing. See fenfes. 



Senfation implies the perception of pleafure and pain. May- 

 be fufpended without death, 28. See fenfes. Theory of 

 fenfationi 182. 



Senfes. Fifhes endowed witliJthe fenfe of hearing, 89. Of 

 the fenfes in general, 168. Of the fenfe of fmelling, 169. 

 Men, as well as brutes, affifted in the fele6lion of food by 

 the {enfe of fmelling, 170. Moft odours produ(5iive either 

 of pleafure or pain, 171. The fenfe of fmelling in fome 

 animals remarkably acute, 172. Of tafting, 172. The 

 organs of tafte and fn}^jelling affift each other, 173. Senfe 

 of tafting comparatively grofs, 174. Senfe of hearing, 175. 

 The pleafures derived from it, 178. Senfe of touch, ISl. 

 Senfe of feeing, 185.; conveys no idea of diftance, 192. 

 Errors of vlfion corre^led by touch, 16^ Of the fenfe of 

 fmelling alone, 1 94. Of hearing aloH^^^6. ; of fmelling 

 and hearing united, ibid. ; of tafte aloli'fe, and united' with 

 fmelling and hearing, 196 ; of light alone, 197.; of fight 

 united with fmell, hearing, and tafte, 197 ; of touching 

 alone, 198 ; of touch united with fmelling, 200. ; of hear- 

 ing, tafte, and touch united, ibid. Of fight united wdth 

 all the other fenfes, 201. 



Sepia. See cuttle-fiih. 



Serpents caft their fliins annually, 295. 



Sexes. Of the fexes of animals, 242. Their intercourfe not 

 always neceftary for multiplication, 244. See multiplica- 

 tion. Caterpillars are of no fex, 245. Among the larger 

 animals, the difi^erence of fize betw^een males and females 

 is not confiderable, 245 ; but. among infects, the diff'er- 

 ence often great, 245, 246, 247. Of the fuppoled fexes 

 of plants, 251. The arguments employed to fupport the 

 fexes of plants are entirely analogical, 252. Thefe analo- 

 gies fiiown to be without foundation, ibid. Some of them 

 ridiculous, 254. The moft plaufible argument in fupport of 

 vegetable fexes derived from the; culture of the date-bear- 

 ing palm, ibid. This circumftance brings no aid to the 

 fexualift, 254. Mylius's experiment on the Berlin palm 



