XVI 



ILLUSTRATIONS. 



323 



324 

 331 

 332 



333 



FIGURE 1 



212. The thyroid gland of Mana 



esculenta .... 



213. The lymphatic gland of Jiana 



esculenta ... 



214. The male urino-genital organs 



215. The right kidney . 



216. The blood vessels and lym 



phatics of the kidney . 



217. Vertical sections through the 



kidney . (coloured) Plate II. 



218. The uriniferous tubes . . 335 



219 . A gold preparation of the kidney 



oiBana esculenta 



(coloured) Plate II. 



220. Transverse section of the kidney 338 



221. The bladder . . . .339 



222. The male reproductive organs , 341 



223. Various preparations from the 



testis ..... 342 



224. The female reproductive organs 344 



225. Preparations from ovary and 



oviduct .... 346 



226. The male urino-genital organs 348 



227. l!h.e ïa,i-boày 0Î Rana esculenta 349 



228. The epidermis from the head of 



Rana esculenta . 



229. Vertical section through the 



skin of the back . 



230. Surface view of epidermis of 



Rana temporaria 



231. Nerve terminations of the 



branched pigment-cells of 

 the cutis .... 



232. The temporary papillae in i?«wa 



temporaria .... 



233. The epidermis of the supple- 



mental toe of Rana escu- 

 lenta 



234 I. Fore-foot of a male frog 

 234 II. The swelling on the supple- 

 mental toe of a male frog . 



235. The blood-vessels and lym- 



phatics of the skin 



236. Lateral sense-organ of tadpole 



of frog . . . .378 



367 

 368 

 368 



371 



375 

 375 



375 



376 



FIGURE PAGE 



237. Various parts from the fungi- 

 form papillae . . -381 



238, 239. Frontal sections through 



the nose of two tadpoles . 384 



240 I A. Bowman's glands in situ 



from Rana temporaria . 386 



240 I B. Section of Bowman's gland 386 



240 II. Vessels of nasal mucous 



membrane of Rana esculenta 386 



241. Separations from the olfactory 



mucous membrane of Rana 

 temporaria . . . .388 



242. The tympanic membrane of 



Rana esculenta . . . 389 



243. The columella . . . 391 



244. Antero-posterior section through 



the capsule of the right 

 labyrinth of Rana esculenta 392 



245. The membranous labyrinth of 



Rana esculenta . . . 394 



246. Part of the outer wall of the 



perilymphatic space . . 395 



247. 248. The right membranous 



labyi'inth of Rana esculenta 397 

 249, 250. The membranous labyrinth 



o? Rana esculenta . 399,401 



251. Preparations from the ear of 



Rana esculenta . . . 402 



252. The nerve-terminations in the 



membranous labyrinth of 

 Rana esculenta . . . 404 



253. Endothelium from the inner 



surface of the sclerotic coat . 406 



254. 255. Preparation from cornea of 



Rana esculenta . . 407, 408 



256. Thevesselsofthechoroidandiris 410 



257. Fibres from the lens of the frog 414 



258. Vertical section through retina 



of frog . _ . . .415 



259. Various preparations from the 



eye of the frog . . .417 



260. The vessels of the vitreous body 421 



261. Preparations from the nicti- 



tating membrane of Rana 

 esculenta . . . .423 



