XVI 



LIST OF WOODCUTS. 



FlflUM PAGE 



288. Liver of human germ . 312 



289. Nail-tissue . . .362 



290. Intestinal epithelium . 332 



291. Jelly-like tissue . . 363 

 2!)2. Cartilaginous tissue . 363 

 293. Neuro-inuscular ceils . 364 

 234. Nerve-tissue . . . 364 



295. Muscle-tissue . . .364 



296. Vascular tissue . . 365 



297. Blood-cells . . . 365 



298. Blood-vessels of a Worm . 371 



299. Head with blood-vessels 



of Fish. . . .375 

 300-302. Arterial arches . 377 

 303-306. . 378 



307-310. Development of the 



heart . . . .380 

 311-314. Development of the 



heart . . . .382 

 315. Transverse section 



through Haliphysema . 393 



316. Rudiments of Urogenitalia, 400 



317. Primitive kidney of Bdello- 



stoma . . ' . 406 



318. Earliest primitive kidney 



rudiments . . . 408 



319. 320. Primitive kidneys of 



Mammals ... 409 



321. Development of nropeni- 



tal system . . . 414 



322, 323. 415 

 324-326. 416 



327. Female sexual organs of 



Beaked Animal (Orni- 

 thorhynchus) . .418 



328. Change of position of both 



kinds of sexual glands 



in human beings . . 420 



329. Development of the human 



external sexual organs 422 



330. Human egg-folliclea . 426 



