108 INDEX. 



Of the secretory apparatus, 210. Serous transudation, 210. Secretion 

 in the mucus follicles, 212. In the conglomerate glands, 212. Of acci- 

 dental secretions, 212. Influence of the nervous energy on the secretions, 

 214. Influence of the imagination on the secretions, 217. Quantity of 

 of fluids secreted, 218. 



Secretion of adeps within the cellular tissue, 219. Difference of quan- 

 tity and quality of this fluid, in the different parts of the body, 220. Of 

 the uses of the adeps, 220. Circumstances which increase or lessen its 

 secretion, 221. Analogy of the marrow of the bones to adeps, 22 1. Of 

 the insensibility of the medullary membrane, 222. 



CHAPTER VI. 



Of Nutrition^ 223. 



Nutrition is the completement of assimilation, 223. Period of the 

 complete renovation of the body, 223. Mechanism of nutrition ; from 

 arterial blood only, 224. Difference of vegetable and animal substances, 

 225. New products, 225. Of the emunctories, 227. General view of 

 the functions of nutrition, 228. 



CHAPTER VII. 



Of Sensation, 231. 



Functions that are subservient to the preservation of the individual, 

 by connecting him with surrounding beings. Of sensations, 231. Na- 

 tural succession to the phenomena of sense, 231232. 



Of light and of colours, 233. Organ of sight formed of three dis- 

 tinct parts, 236. Use of the eye-lids, eye-lashes, and lachrymal ducts, 



240. Eye-ball, its structure, 241. Mechanism and phenomena of vision, 



241. Motions of the iris, 242. Refraction of the rays of light by the 

 membrane, 243, and by the fluids of the eye ; inversion of objects on the 

 retina ; point of distinct vision, 244. Defects of vision, 245. Develop- 

 ment of the eyes and their motions, 246. Errors of vision, 247. Its dif- 

 ference in different animals, 248. 



Organ of hearing; of sound, 249. Structure of the ear, and mechan- 

 ism of hearing, 249. Difference in animals, 252. Defects of hearing, 252. 



Of odours, 252. Organ of smell, 253. Sensation of smell, 254. 



Of taste, 255. Of the tastes of different substances, organ of taste, 

 255 256. In different animals, 256. Uses of the nerves of the tongue, 

 256. Galvanic experiments, on this subject, 257. 



Of touch, 258. Its certainty and error, 258. Of the integuments, 258. 

 Of the nails, 258. Of the hair, 262. Of the hand, 263. Touch in dif- 

 ferent animals, 265. 



Of the nerves, 267. Of their origin in sensible parts, 267. Of their 

 structure, 268. Opinion of Reil on this subject, 268. Of the manner they 

 arise from each other, 269. Of their termination in the brain, 269. Of 

 their comparative size, in different animals, and in man at different 

 ages, 270. 



Of the coverings of the brain, 272. Mechanism of the bones of the 

 skull and face, 272. Use of the sphenoid, 273. Rounded form of the 

 skull, 276. Uses of the dura mater, of the arrachnoid, and the pia mater, 

 276. Size of the brain, 277. Form of the head, 277. Connexion with 





