INDEX 



609 



Mussel, 407 ; Lancelet, 424 ; 

 Dogfish, 449 ; Rabbit, 520 



Body-cavity, see Ccelome 



Body of vertebra, see Vertebra 



Body-segments, see Metamere 



Bojanus, organ of, 406 



Bone : replacing and investing, 43, 

 489 ; nature of, 52 ; microscopi- 

 cal structure of, 116 



Bones, see Endoskeleton, Skull, 

 Vertebra, Ribs, Sternum, and 

 under individual bones of limbs 



Botany, I 



Brachial plexus, see Nerve-plexus 



Brain : Frog, 28, 156, 202 ; Earth- 

 worm, 342 ; Crayfish, 379 ; Mus- 

 sel, 408 ; Lancelet, 420, 424 ; 

 Dogfish, 459 ; Rabbit, 528 ; de- 

 velopment of, in Vertebrates, 584 



Brain-case, see Skull 



Branchia, see Gill 



Branchial apertures, arches, clefts, 

 and septa : Tadpole, 204, 206 ; 

 Lancelet, 420, 422 ; Dogfish, 432, 

 438, 448 ; development of, 589 



Branchial rays, 438, 448 



Branchial vessels : Crayfish, 377 ; 

 Mussel, 408 ; Lancelet, 425 ; 

 Dogfish, 449 ; Tadpole, 451 



Breast-bone, see Sternum 



Bronchus, 5 1 ? 



Brood-pouch, 410 



Buccal cavity, 16, 335, 445, 507 



Buccal groove, 262 



Bud, budding, 306, 309 



Bufo, BufonidDe, 218 



Bulb, see Medulla oblongata 



Bulbus aortae, 89 



Bulla, tympanic, 492 



Byssus, 411 



c 



, 514 



Caenosarc, 311 

 Calcaneum, 51, 504 

 Calcar, 52 

 Calciferous glands, 335 



PKACT. ZOOL. 



Canal : central, of spinal cord, 156, 

 424, 459 ; naso-palatine, 507 ; 

 neural, see Vertebral column ; 

 neurenteric, 203 ; radial and circu- 

 lar of Medusa, 315 ; semicircular of 

 ear, see Auditory organ and Mem- 

 branous labyrinth ; sensory, of 

 Dogfish, 432, 464 ; sternal, of 

 Crayfish, 363 ; vert ebrarterial, 498 



Canaliculi, see Bone 



Canine teeth, 509 



Capillaries, 95, 377, 451, 454 



Capitular facet and capitulum, 498, 

 500 



Carapace, 361 



Carbohydrates, 72 



Carbon dioxide, 66 



Carchesium, 277 



Cardiac division, see Stomach. 



Carotid arch, see Arteries of Frog, 

 Dogfish, and Rabbit 



Carpus, 50, 502 



Cartilage, 20, 35, 115, 431, 435; 

 calcified, 46, 48, 435, 487 



Caruncle, 600 



Castings of earthworm, 326 



Cell, no, 231, 558; see under 

 various types 



Cell-colony, see Colony 



Cell-differentiation, see Differentia- 

 tion, and under development of 

 various types 



Cell-division, 106, 561, 603 



Cell-membrane or wall, 232, 244, 

 255, 275, 285, 559 



Cellulose, 244, 254, 421 



Cement, 445, 510 



Centrale, 502, 504 



Centrosome, 559 



Centrosphere, 559 



Centrum, see Vertebra 



Cephalothorax, 361 



Cerebellum: Frog, 157 '> Dogfish, 

 459 ; Rabbit, 530 ; development 

 of, 584 



Cerebral flexure, 586 



Cerebral ganglion, see Brain 



Cerebral hemispheres : Frog, 159 ; 

 Rabbit, 528 ; development of, 586 



R R 



