INDEX 



621 



Body-cavity, see Coelome 



Body of vertebra, see Vertebra 



Body-segments, see Metamere 



Bojanus, organ of, 406 



Bone : replacing and investing, 

 43, 489 ; nature of, 52 ; mi- 

 croscopical 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 ; 

 Earthworm, 342 ; Crayfish, 

 379 ; Mussel, 408 ; Lancelet, 

 420, 424 ; Dogfish, 459 ; Rab- 

 bit, 528 ; development of, in 

 Vertebrates, 588 



Brain-case, see Skull 



Branchia, see Gill 



Branchial apertures, arches, 

 clefts, and septa : Tadpole, 

 204, 206 ; Lancelet, 420, 422 ; 

 Dogfish, 432, 438, 448 ; develop- 

 ment of, 597 



Branchial rays, 438, 448 



Branchial vessels : Crayfish, 

 377 ; Mussel, 408 ; Lancelet, 

 424 ; Dogfish, 449 ; Tadpole, 



451 



Breast -bone, see Sternum 

 Bronchus, 517 

 Brood-pouch, 410 

 Buccal cavity, 16, 335, 445, 57 

 Buccal groove, 262 

 Bud, budding, 306, 309 

 Bufo, Bufonidae, 218 

 Bulb, see Medulla oblongata 

 Bulbus aortae, 89 

 Bulla, tympanic, 492 

 Byssus, 411 



Gecum, 514 

 Ca^nosarc, 311 

 Calcaneum, 51, 504 

 Calcar, 52 



PRACT. ZOOL. 



Calciferous glands, 335 



Canal : central, of spinal cord, 

 156, 424, 459 ; naso-palatine, 

 507 ; neural, see Vertebral 

 column ; neurenteric, 203 ; 

 radial and circular of Medusa, 

 315 ; semicircular, of ear, see 

 Auditory organ and Mem- 

 branous labyrinth ; sensory, 

 of Dogfish, 432, 4646 ; sternal, 

 of Crayfish, 363 ; vertebrar- 

 terial, 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. 

 487 ; calcified, 46, 48, 435 



Caruncle, 6icf 



Castings of earthworm, 326 



Cell, no, 231, 558; and see 

 under various types 



Cell -colony, see Colony 



Cell-cMerentiation, see Differen- 

 tiation, and under develop- 

 ment of various types 



Cell-division, 106, 560, 575 



Cell-membrane or wall, 232, 244, 

 254. 2 55, 275, 285, 559 



Cellulose, 244, 254, 421 



Cement, 445, 510 



Centrale, 502, 505 



Centrolecithal ova, 574 



Centrosome, 560, 568, 572 



Centrosphere, 560 



Centrum, see Vertebra 



Cephalothorax, 361 



Cerebellum : Frog. 157 '> Dogfish. 

 459 ; Rabbit, 530 ; develop- 

 ment of, 590 



Cerebral flexure, 592 



Q Q 



