472 



INDEX. 



Asymmetry, 84, 368 



Atrial pore, 310 



Atrium, 310 



Auditory nerve, 349 



Auditory organs, 75, 281, 350 



Auk, 411 



Aurelia, 176, 177 



Autolytus, 229, 230 



Automatism, n 



Aves, 394 



Axiality, 83, 84 



Axial skeleton, 325 



Axon, 55 



Baboons, 447 

 Balanoglossits, 308, 309 

 Barbs (see feather) 

 Barbules (see feather) 

 Barnacles, 288 

 Bass (sea), 367 

 Bats, 446 

 Beaver, 444 

 Bees, 114, 303 

 Beetles, 301 

 Bibliography, 466 

 Bilateral symmetry, 86, 88 

 Birds, 135 

 Bittern, 412 

 Bivium, 205 

 Blastoidea, 213 

 Blastomeres, 32 

 Blastopore, 35 

 Blastula, 34 

 Blood, 51, 335 

 Boat-shell, 255 

 Body-wall (see Coelom) 

 Bojanus, organ of ( kidney of clam) 

 Bonasa, 413 

 Bone, 49 

 Bony-fishes, 369 

 Book-lungs, 278 

 Bat-fly, 296, 297 

 Bothriocephalus, 198, 199 

 Brachiopoda, 196 

 Brain (vertebrate), 345 

 Branchiae, 63, 207 



Branchial arches, 337-339 (see cir- 

 culatory system) 

 Brittle-stars, 214 

 Bronchi, 436 

 Brook trout, 365 

 Bryozoa (see Polyzoa, 195) 

 Buccal cavity, 331 

 Bugs, 296 

 Bubo, 416 

 Bufo, 378 

 Butterflies, 300 



Cabbage butterfly, 299 



Cabbage worm, 299 



Caeca, hepatic, 207 



Caecum, 434 



Cambarus, 261 



Camel, 442 



Camera eye. 76, 352 



Campanularia, 177 



Campodea, 294 



Canaliculi, 49 



Canine teeth, 432 



Canker-worm, 300 



Capillaries, 65 



Caprella, 292 



Carapace in Crustacea, 279 ; turtles, 

 388 



Carbohydrates, 10 



Cardinal veins, 362 (see circulatory 

 system) 



Cardium, 253 



Carinatae, 410 



Carnivora, 443 



Cartilage, 48 



Cat, 443 



Caudal vertebrae, 327 



Cecidiomya, 298 



Cell, 1 8 



form, 18; size, 19; structure, 19; 

 wall, 20 ; functions, 21 ; reproduc- 

 tion, 22 ; division, 22 



Centipede, 293 



Central nervous system, 71, 344 



Centropristis, 367 



Centrosome (centrosphere), 20 



Centrum (see vertebra), 325 



Cephalopoda, 257 



Cephalo-thorax, 262, 275 



Ceratodus, 370 



Cercaria, 189, 190 



Cervical vertebrae, 327 



Ceryle, 419 



Cestodes, 190 



Cetacea, 441 



Chaetopoda, 230 



Chaetognatha, 233 



Chameleon, 388 



Cheiroptera, 446 



Chelonia, 388 



Chemical sense, 74, 350 (see taste 

 and smell) 



Chicken, 413 



Chimney-swifts, 422 



Chlamydomyxa, 20 



Chordata, 308 (see vertebrata) 



Chorion, 405, 438 



Chylema, 20 



Chromatin, 20, 26 



Cicada, 295, 296 



