LIST OF TEXT-ILLUSTRATIONS xxv 



179. Muscles of the eyeball (Sappey) . . l . 699 



1 80. Diagram illustrating the action of the muscles of the eyeball (Fick} . . . 701 



181. Lachrymal and Meibomian glands (Sappey} . . . . V. . . . 708 



182. Lachrymal canals, lachrymal sac and nasal canal, opened by their anterior portion 



(Sappey} 709 



183. The pinna (Sappey} 713 



184. Posterior view of a mold in wax of the cavity of the concha and the external audi- 



tory meatus (Sappey} .714 



185. General view of the organ of hearing (Sappey} 716 



1 86. Ossicles of the tympanum {modified from Ritdinger} .. 717 



187. The right temporal bone, the petrosal portion removed, showing the ossicles seen 



from within. From a photograph (Rudinger) . . . .' . . .718 



1 88. The left bony labyrinth of a new-born child, forward and outward view. From a 



photograph (Rudinger} . . . 720 



189. Resonators of Helmholtz . 729 



190. Right membrana tympani, seen from within. From a photograph and slightly 



reduced (Rudinger} . . . . 735 



191. Diagram of the labyrinth. From a photograph and slightly reduced (Rudinger} . 743 



192. Otoliths from various animals {Rudinger} . . . . . . '. . 744 



193. Section of the first turn of the spinal canal of a cat newly born. Section of the 



cochlea of a human foetus at the fourth month. From a photograph and slightly 



reduced {Rudinger} 745 



194. Distribution of the cochlear nerve in the spiral lamina. The cochlea is from the 



right side and is seen from its antero-inferior part {Sappey} . . . . 747 



195. The two pillars of the organ of Cord (Sappey} ....... 748 



196. Vertical section of the organ of Corti of the dog ( Waldeyer} . . .- . 749 



197. Uterus, Fallopian tubes and ovaries, posterior view (Sappey} . . . . . 755 



198. Ovum of the cat, within the ovary ( Wilson} . . 758 



199. Virgin uterus; anterior view; median longitudinal section; transverse longitudinal 



section (Sappey} . . 760 



200. Muscular fibres of the uterus (Sappey} 761 



20 1. Superficial fibres of the anterior surface of the uterus (Liegeois} .... 762 



202. Inner layer of the muscular fibres of the uterus (Liegeois} 763 



203. Uterine and utero-ovarian veins (Sappey} ........ 764 



204. Fallopian tube ( Williams, after Sappey} ' * . 764 



205. External erectile organs of the female (Liegeois} 765 



206. Deutoplasm-forming ovum from a Graafian follicle of a woman twenty-seven years 



old (Nagel} . 767 



207. Ovum from a Graafian follicle of a woman thirty years old (Nagel} .... 768 



208. Primordial ovum, with two germinal vesicles and follicular epithelium; from the 



ovary of a new-born child {Nagel} 769 



209. Portion of an ovary, showing a corpus luteum of pregnancy ( Williams) . . -775 



210. Lobes of the testicle and epididymis {Sappey'} 777 



211. Interstitial gland of the testicle (Bouin and Ancel} . 779 



212. Vesiculae seminales, vasa deferentia and ejaculatory ducts (Sappey} .... 780 



213. Spermatozoids, spermatic crystals and leucocytes (Peyer} 7^4 



214. Human spermatozoids (Retzius and Jensen} 7^4 



215. Diagram showing stages of spermatogenesis as seen in different sectors of a seminif- 



erous tubule of a rat (McMurrich, after Leuhossek) . . . ... 785 



216. Germ-nuclei of the thread-worm ascaris megalocephala {Boveri} . . . . 790 



217. Karyokinesis (Boveri} 79 1 



218. Cell-division ( Wilson} 792 



