706 



Chyme, 458 

 Cicada, 238, 241, 244 

 Ciliary muscle, 398, 400, 401 

 Ciliophora, 134 

 Cilium, 114, 115, 134 

 Circulatory systems, crayfish, 212, 213 

 earthworm, 193 

 frog, 312-316 

 grasshopper, 225, 226 

 lobster, 212, 213 

 man, 494-517 

 Neanthes, 188 

 nemertine, 183, 184 

 Circumesophageal connectives, 218, 219 

 Circumpharyngeal connectives, 192, 194 

 Cirri, 135 

 Clam, 254-261 

 Claspers, 532, 535 

 Classification, 105 

 Clavicle, 303, 304, 376, 380 

 Claw, 368 

 Clitellum, 191, 197 

 Cloaca, 302, 311, 312, 337 

 Clypeus, 224, 225 

 Cnidoblast, 141, 143, 144 

 Cnidocil, 143, 144 

 Cobra, 328 

 Coccyx, 376, 380 

 Cochlea, 403, 405, 406 

 Cocoon, 197, 198 

 Codosiga, 124, 125 

 Coelenterata, 141 

 Coelenteron, 78 



Coelom, 79, 185, 188, 269, 272, 562, 564 

 Coenosarc, 149, 150 

 Coenzyme, 44 

 Cohesion, 24 

 Colchicine, 609 

 Coleoptera, 221 

 Collateral sympathetic ganglion, 42o 



Collecting tubule, 525 



Colloids, 46 



Colon, 453, 466 



Color blindness, red-green, 602, 604 



Columella, 307, 308 



Comb in chickens, 597 



Comb-jelly, 432 



Commensalism, 95, 96 



Compound, 29 



Conditioned reflex, 460 



Condyle, 306 



Cones, 308 



Conjugation, 119, 120 



Continuity of the race. See Genetics 



Contractile tissue, 72, 73 



Contractile vacuole, 110, 111, 115, 116 



Contraction, muscle, 388, 389 



Conus arteriosus, 313 



Convolutions, 422, 424 



Coordination, 392-450 



Copperhead, 331 



Copulation, 165 



Coracoid, 303, 304 



Coral, 156, 157 



INDEX 



Coral snake, 331 

 Cornea, 218, 219, 398, 400 

 Corneum, 367, 368 

 Coronary artery, 498, 499 



circulation, 498, 499 



sinus, 498, 499 



vein, 498, 499 

 Corpora quadrigemina, 420 

 Corpus luteum, 439, 440 

 Correns, 582 

 Cortex, 445 

 Corti, organ of, 406 

 Corticotrophin, 447, 448, 449 

 Cortin, 445 

 Cortisone, 445 

 Cow, domestic, 341 

 Coxa, 223 

 Crabs, fiddler, 204, 217 



hermit, 204 



king, 249, 250 

 Cranial nerves, 307, 308-310 

 Craniosacral nervous system, 426, 427 

 Cranium, 376 

 Crayfish, 207-220 

 Crenation, 54 

 Crepidula, 249 



Cretaceous (period), 321, 625, 630 

 Cretin, 434, 442 

 Cribiform plate, 378 

 Cricket, 241 



Criss-cross inheritance, 605 

 Cro-Magnon, 356, 357 

 Crop, 191, 192, 225 

 Crossing over, 558, 606 

 Crustacea, 203 

 Crystalline style, 258 

 Crystalloids, 46 

 Cutaneous abdominis, 304 

 Cuticle, 176, 177, 191 

 Cuttlefish, 265 



eye, 660 

 Cyclops, 204 

 Cyclostomata, 279, 285 

 Cyclostome, 285, 287, 288, 289 

 Cynodictis, 341 

 Cynognathus, 336 

 Cyst, 90, 112, 181 

 Cytology, 16 

 Cyton, 411 

 Cytoplasm, 57 

 Cytopyge, 115, 116 

 Cytostome, 114, 115 



Daphnia, 204, 207 



Daughter colonies, 67, 68 



Darwin, Charles, 107, 190, 582, 651-654 



Darwin, Erasmus, 650 



Deafness, 613 



Deamination, 520 



Death, natural, 83 



Decerebration, 422 



Decompression sickness, 488 



Dedifferentiate, 577 



