LIST OF ILLUSTRATIONS. xix 



FIG. PAGE 



154. The brain of an adult rabbit from the ventral surface. (From 



Marshall and Hurst) 383 



165. A transverse section across the head of a rabbit embryo of the 



fourteenth day 388 



156. A transverse section across the head of a rabbit embryo of the 



twenty-first day 391 



157. A diagrammatic section across the head of an adult rabbit, to show 



the relations of the internal ear, tympanic cavity and membrane, 

 and the auditory ossicles. (From Marshall and Hurst) . . 394 



158. A transverse section across the head of a rabbit embryo at the end 



of the eleventh day, the section passing through the medulla 

 oblongata, the ears, and the pharynx 395 



159. A transverse section across the head of a rabbit embryo of the 



fifteenth daj r , passing through the medulla oblongata, the ears, 

 and the pharynx 396 



160. A diagrammatic view of an adult male rabbit from the left side. 



(From Marshall and Hurst) . . . 401 



161. A rabbit embryo at the end of the twelfth day, seen from the right 



side 402 



162. The skull of the rabbit from the right side. (From Marshall and 



Hurst) 405 



163. A transverse section across the thorax of a rabbit embryo of the 



sixteenth day 409 



164. A transverse section across the body of a rabbit embryo of the 



early part of the tenth day, showing the supposed epiblastic 

 origin of the Wolffian duct. (After Hensen) . . . .422 



165. A transverse section across the body of a rabbit embryo at the end 



of the eleventh day 423 



166. A transverse section across the hinder part of the body of a rabbit 



embryo of the fourteenth day 424 



167. Selected vertebrae from the rabbit. (From Marshall and Hurst) . 431 



168. A transverse section across the uterus, with the contained blasto- 



dermic vesicle, of a rabbit at the end of the seventh day. (In 

 part after Duval) 436 



169. A transverse section across the uterus and the contained blasto- 



dermic vesicle of a rabbit at the end of the ninth day. (In part 

 after Duval) 439 



170. A transverse section across the uterus and the contained embryo 



of a rabbit at the end of the nineteenth day .... 443 



THE HUMAN EMBKYO 



171. Part of a vertical section of the ovary of a new-born infant. (From 



Strieker's ' Histology') 451 



172. Front view of Reichert's ovum. (From Kolliker, after Reichert) . 472 



173. Side view of Reichert's ovum. (From Kolliker, after Reichert) . 472 



174. Diagrammatic section of Reichert's ovum. (From His) . . . 473 



175. A longitudinal section of the uterus, with an ovum in situ, esti- 



mated as about the thirteenth day. (After Kollmann) . . 474 



176. Outline figure of a human embryo lettered by Professor His, E, and 



estimated as about the thirteenth day. (From His) . . . 477 



