xiv LIST OF ILLUSTRATIONS. 



FIG. PAGE 



184. Nerve-fibre after osmic acid. (Schwalbe.) . , m . . - . 205 



185. Frog's nerve-fibre. (Obersteiner.) . . . . . . 206 



1 86. Rauvier's crosses. (Obersteiner.) ...... 207 



187. Ranvier's cross and Frommann's lines. (Obersteiner.) . . . 207 



188. Peripheral nerve-fibre with axis-cylinder ..... 208 



189. Intercostal nerve with Ranvier's crosses . . 208 



190. T.S. nerve. (Eichhorst.) ....... 209 



191. Non-mednllated nerve. (Obersteiner.} ..... 209 



192. Sympathetic nerve. (Schieffer decker.) ..... 210 



193. Neuro-keratin network. . . . . . . . .210 



194. Frommann's lines. (Obersteiner.) ...... 211 



195. Nerve-fibre of frog. (Obersteiner.) . . . . . .211 



196. T.S. nerve-fibres, osmic acid. (Stirling.) ..... 212 



197. Spinal ganglion. (Cadiat.) . . . . . . .214 



198. Cells of spinal ganglion. (Obersteiner.) ..... 214 



199. Bipolar nerve-cell of skate. . ..... 215 



200. Spinal ganglion herve-cell. (Ranvier.) ..... 216 



201. Cervical sympathetic ganglionic cell. (Stirling.) .... 217 



202. Multipolar nerve-cell of spinal cord. (Obersteiner.) . . . 218 



203. Nerves of frog's sartorius. (Mays.) ...... 220 



204. End-plates of lizard. (Kiihne.) . .... 221 



205. End-plate of lizard. (Stirling.) ...... 221 



206. Sympathetic nerve-cell. (Ranvier.) ...... 222 



207. Heart muscle. (Stirling.) ....... 224 



208. Purkinje's fibres. (Ranvier.) ....... 225 



209. Endocardium. (Ranvier.) ....... 226 



210. T.S. tricuspid valve. (Ranvier.) ...... 226 



211. L. S. human aorta. (Ranvier.) ...... 227 



212. T.S. artery. (Stirling.) ....... 227 



213. Eudothelium of artery and vein. (Stirling.) .... 228 



214. Capillaries. (Obersteiner.) ....... 229 



215. Small artery. (Stirling.) ....... 229 



216. Arteriole. (Obersteiner.) ....... 229 



217. T.S. small artery and vein. (Stirling.) ..... 230 



218. Artery of brain. (Obersteiner.) ...... 231 



219. Arteriole, silvered. (Ranvier.) ...... 231 



220. Capillary, silvered. (Landois and Stirling.) .... 232 



221. Developing blood-vessels. (Stirling.) ..... 233 



222. L.S. lymph gland. (Ranvier.) . . . . . . 235 



223. Lymph sinuses. (Stirling.) ....... 237 



224. Central tendon. (Ranvier.) ....... 238 



225. Pleural surface of diaphragm. (Stirling.) ..... 238 



226. Stomata. (Stirling.) . . . . . . . 239 



227. Tonsil. (Stohr.) ......... 240 



228. Thymus. (Stirling.) ........ 241 



229. Injected thymus. (Cadiat.) ....... 242 



230. Elements of thymus. (Cadiat.) ...... 242 



231. Human spleen. (Stohr.) ....... 243 



232. Elements of splenic pulp. (Stohr. ) . . . . . . 244 



233. Reticulum of spleen. (Cadiat.) ...... 244 



234. T.S. tongue of cat. (Stirling.) ...... 246 



235. Filiform papilla. (Stohr.) ....... 247 



236. Fungiform papilla. (Stohr.) ....... 247 



237. Crypt of tongue. (Schenk.) ....... 248 



238. Injected tongue of cat. (Stirling.) ...... 248 



239. Papillae foliatae. (Stirling.) ....... 249 



240. V.S. Papillae foliatae. (Stdhr.) 250 



241. V.S. tooth . . . . . . .--".. . . 252 



242. 243. Enamel prisms. (Landois and Stirling) .... 253 



244. T.S. fang of tooth. (Landois and Stirling. ) . . . . 253 



245. Development of tooth. (Landois and Stirling.) .... 254 



246. Later stage of 245. (Stohr.) ....... 254 



247. Later stage of 246. (Stohr. )....... 254 



248. T.S. oesophagus. (Stirling.) ....... 255 



