TABLE OF CONTENTS. Xlll 



CHAPTER XII. 



THE DEVELOPMENT OF THE ORGANS IN MAMMALIA, pp. 365 422. 



The organs derived from the epiblast, 365 400. Hairs, 365. 

 Glands, 366. The hind-brain, 367370. The mid-brain, 370, 371. 

 General development of fore-brain, 371. Thalamencephalon, 371 

 376. Pituitary body, 372, 373. Pineal gland, 373 376. Cerebral 

 hemispheres, 376 385. The olfactory lobes, 385. Histogenesis of 

 brain, 385 387. The eyes, 387 390. Choroid slit, membrana 

 capsulo-pupillaris and arteria centralis retinae, 389. The auditory 

 organ, 390 397. Accessory auditory structures, 397 399. The nasal 

 organ, and organ of Jacobson, 399. Cranial and spinal nerves ; sym- 

 pathetic system, 400. 



Organs derived from the mesoblast, 400 417. The vertebral 

 column, 400, 401. The skull, 401. The visceral arches, 402. Man- 

 dibular and hyoid arches ; malleus, incus, and stapes, 403 405. 

 Eibs ; sternum; pectoral and pelvic girdles, 405. Skeleton of the 

 limbs, 406. Body-cavity ; pericardial, pleural cavities and dia- 

 phragm, 406. 



The vascular system, 406 413. The heart, 406, 407. The ar- 

 terial system, 407 409. The venous system, 409 413. The supra- 

 renal bodies, 413, 414. The urinogenital organs, 414 417. 

 Wolffian duct and body ; kidney ; ovary and testis, 414, 415. Genital 

 cord, 415. Urinogenital sinus and external generative organs, 415 

 417. 



Alimentary canal and its appendages, 477 422. Splanchnic 

 mesoblast and mesentery, 419, 420. Stomodaeum, 420, 421. Hard 

 and soft palate, 420, 421. Teeth, 421. Proctodaeum, 422. 



APPENDIX . . pp. 423471. 



Incubators, 423 425. Hardening reagents, 425 428. Staining 

 reagents, 428 432. Imbedding, 432 434. Cutting sections, 434, 

 435. Mounting sections, 436. Preservation of embryos as a whole, 

 43<5, 437- 



