xxii LIST OF FIGURES IN PART IV. 



FIG. PAGE 



160. Figure to illustrate an optical effect produced by parallel slanting 



lines . . . . ... . ... .. . 1297 



161. Figure to illustrate binocular vision 1300 



162. Diagram to illustrate the general structure of the ear . . . 1316 



163. The bony labyrinth . . . . 1317 



164. The auditory ossicles 1320 



165. Diagram to illustrate the relations of auditory passage, tympanum 



and Eustachian tube 1321 



166. Diagram of the median wall of the tympanum 1321 



167. Diagram of the outer wall of the tympanum as seen from the mesial 



side 1322 



168. Frontal section through the tympanum 1323 



169. The membrana tympani ......... 1324 



170. The ossicles in position 1325 



171. The ligaments of the ossicles . . 1326 



172. The stapes in position 1327 



173. The malleus and incus in position 1328 



174. Diagram of the outer wall of the tympanum as seen from the mesial 



side ............ 1333 



175. The membranous labyrinth as seen from above . . . . 1336 



176. The membranous labyrinth and the endings of the auditory nerve . 1337 



177. Diagram of a transverse section of a whorl of the cochlea . ... 1341 



178. Diagram to illustrate the structure of a crista or a macula . . 1345 



179. Diagram of the organ of Corti 1351 



180. Diagram of the constituents of the organ of Corti . . . . 1353 



181. The cartilages of the larynx 1445 



182. Diagram of the superior aperture of the larynx . ... . 1448 



183. Diagram of the larynx in vertical section 1448 



184. Diagram of the larynx in vertical transverse section .... 1450 



185. Diagram of a laryngoscopic view of the larynx . . . . . 1452 



186. The larynx as seen by means of the laryngoscope in different 



conditions of the glottis 1453 



187. Diagram of the transverse and oblique arytenoid and of the posterior 



crico-arytenoid muscles 1456 



188. Diagram to illustrate the thyro-arytenoid muscles .... 1457 



189. The internal thyro-arytenoid muscle 1457 



190. The lateral crico-arytenoid muscle . . . ; . . . 1459 



191. The crico-thyroid muscle - . . . . 1459 



192. Diagram to illustrate the contact of the feet with the ground in 



walking . ... . . 1483 



193. Diagram to illustrate running . . 1484 



194. Diagram to illustrate the foetal circulation 1529 



