660 



B. 



Basal plate of the placenta uterina, 



262. 



Basilar plate, G06. 

 Bell's law, 460. 



Belly-stalk of human embryo, 245. 

 Between-brain, 425. 



vesicle, 422, 431. 

 Bile-duct, 329. 

 Blastoderm. 67. 



Blastodermic vesicle, 224 see Blastula. 

 Blastopore, 85, 96, 104, 282. 

 Blastosphere, 08. 

 Blastospheric ccelom, 204. 

 Blastula, 68, 100, 92, 90, 88, 224. 

 Blood, formation of, 170, 175. 

 Blood-circulation, single, 557. 



double, 557, 586. 

 Blood-corpuscles, embryonic, 183. 

 Blood-islands, 179, 183, 551. 

 Blood-points, 185. 

 Blood-vessel system, 542. 

 Blood-vessels, formation of, 186, 175. 

 Body, form of the, 194. 



of Amphioxus and Amphibia, 195. 



of Fishes, Reptiles, and Birds. 197. 

 Body of vertebra, 598. 



Bone -nuclei see Centres of ossifica- 

 tion. 

 Bony labyrinth, 502. 



tissue, 541. 



Bowman's capsule of urinary tubules, 



364. 



Box-within-box theory, 23. 

 Brain, 421. 

 Brain-fissure, anterior. 431. 



posterior, 429. 

 Brain-plate, 457. 

 Brain-sand, 436. 

 Brain-vesicles, 421. 



first, 439. 



second, 431. 



third, 430. 



fourth, 429. 



fifth, 427. 

 Branchial arches, 286, 609. 



arteries, 286, 571. 



clefts, 285. 



furrows, 286. 



leaflets, 287, 571. 



veins, 287, 571. 

 Branchiomeres, 351. 

 Branchiomerism, 633. 

 Bnrsa omentalis, 300, 303. 



C. 



Calcar avis, 441. 

 Canalis auricularis, 556. 



Canalis hyaloideus, 475. 



incisivus, 517 



neurentericus of Amphibia, 120. 



neurentericus of Amphioxus, 110. 



neurentericus of Birds, Reptiles, 



etc., 126, 417. 



neurentericus of Mammals, 129, 



282, 293. 



reuniens, 497. 



utriculo-saccularis, 497. 

 Cardiac endothelium, source of, 175, 



544. 



Cardinal veins, 577. 

 Carpal bones, 641. 

 Cartilaginous tissue, 540. 

 Caruncula lacrymalis, 487. 

 Cauda equina, 421. 

 Caudal fold, 200. 



gut, 292. 



sheath, 209. 

 Cavum tympani, 507 

 Cella media, 443. 

 Cell-budding, 31. 



Cell-patches (chorionic epithelium), 



261. 

 Central canal of the spinal cord, 419 



furrow of the cerebrum, 447. 



lobe of hemispheres, 442. 

 Centres of ossification, 643, 599 

 Centrolecithal eggs, 12. 

 Centrosomes, 53. 



Cephalic curvature, 284. 



elevation, 202. 



flexure, 423. 



process see Head-process. 



see also Head. 

 Cerebellum, 430. 



vesicle of, 422. 

 Cerebral mantle, 426. 



vesicle, 422. 



vesicles sec Brain-vesicles 

 Cervical cavity, 546, 566. 



fistula, 290. 



ribs, 602. 



sinus, 289. 



vertebrse, 602. 

 Chalaza, 18. 

 Chief germ, 189. 

 Chorda dorsalis, 110, 593. 



fundament of, 110, 117. 



tympani, 508, 621. 

 Chordal canal, 132. 



groove of Amphibia, 119. 



groove of Amphioxus, 111. 



groove of Birds, Selachians, Mam- 



mals, 130, 131. 



sheath, 594. 



sheath, skeletogenous, 595. 

 Choriocapillaris, 482. 

 Chorion, 9. 



