INDEX. 



A. 



Accessory germ, 189. 

 nuclei (centres of ossification), 

 599, 640, 643. 



thyroid gland. 318, 320. 

 Acervulus cerebri/436. 

 Acroblast, 180. 

 After-birth see Placenta. 

 After-brain, 421. 



vesicle, 422, 427. 

 Air-cells of lung, 323. 

 Air-chamber of Hen's egg, 18. 219. 

 Albumen of Hen's egg, 17. 

 Alecithal eggs, 12. 

 Alimentary tube. 281. 

 Allantoic circulation, 552. 

 Allantois of Mammals, of Man, 228, 



245,270,398. 



of Reptiles and Birds, 217-19. 

 Amnion of Mammals. 227. 



of Man, 244, 250. 



of Reptiles and Birds, 207, 219. 

 Amniota, 238. 



Amniotic fluid of Man, 251, 271. 



folds, 207-9. 



sheath of the umbilical cord, 252. 

 Ampulla of semicircular canals, 495. 

 Anal membrane, 291. 



pit, 291. 

 Anamnia, 238. 



Animal cells of the germ, 60. 



- pole of the egg, 11. 

 Animalculists 24. 

 Ankle-bones, 641. 

 Antrum of Highmore, 518. 

 Anus, fundament of, 290. 400. 

 Anvil see Incus. 



Aorta raiidahs 576. 



double, 576. 



permanent, 565, 576. 



primitive, 295, 549. 

 Aortic arch, right-sided, 576. 



- arches, 286, 571, 573. 

 Appendix vermiformis, 301. 

 Aquedactns Sylvii, 425, 431. 



Arbor vitse, 427. 



Archenteron, 85, 95, 170 see also 



Ccelenteron. 

 Archiblast, 189. 

 Archiblastic tissue, 189. 

 Arcuate fissure, 4436-^ also Fissura 



hippocampi. 

 Area embryonalis, 102. 



opaca, 99, 177. 



pellucida, 99, 178. 



vasculosa, 185. 



vitellina, 185. 

 Areola mammae, 531. 

 Arteria carotis, 572. 



centralis retinas, 475, 481, 



hyaloidea, 475. 



iliaca, 576. 



omphalomesenterica, 270, 549. 



perforans stapedia, 614. 



pulmonalis, 573. 



sacralis media, 576. 



- spermatica, 386, 390. 



subclavia, 572. 



- umbilicalis, 260, 270, 552, 576. 



vertebralis, 572. 

 Arterial system, 570. 

 Articular cartilage, 643. 

 Articulare, 625. 



Articulation of jaw, primary, 624. 



secondary, 646, 626. 

 Atlas, 603. 



Atresia pupillae congenita, 474. 

 Atrial partition, 558. 

 A trio ventricular valve, 555, 559. 561. 

 Atrium bursae omentalis. 300, 331. 



of heart, 554. 

 Auditory organ, 490. 



ossicles, 508, 619. 



- pit, 491. 



ridge, 492. 



- spot, 492. 



sac \ . /Invertebrates, 492. 



vesicle J or \Vertebrates, 491. 

 Auricle (external ear), 509. 



(of heart), 555. 

 Auricular canal (of heart), 555. 



