INDEX 



855 



Contractile vacuole, 53, 93, 151 



Contraction period, 101 



Control group, 6 



Conurus, 841 



Conus arteriosus, 411, 545, 549 



Convergent evolution, 442, 494, 783 



Coordination, 111 



Copepoda, 303, 836 



Copulatory sac, 210 



Coraciiformes, 841 



Coracoid, 400, 474 



Coral, 196 



precious, 197 

 Coral snakes, 462 

 Corals, true, 197 

 Corixa, 755 

 Cormorant, 480, 763 

 Cornea, 576 

 Coronary arteries, 554 

 Coronary vein, 554 

 Corpus allatum. 111. 330 

 Corpus callosum, 602 

 Corpus cardiacum. 330 

 Corpus luteum, 630 

 Corpus striatum, 602 

 Cortex, 562 

 Cosmic rays, 706 

 Cosmin, 443 

 Costello, D. P.. 287 

 Cotylosaurs, 456, 840 

 Cough reflex, 535 

 Coupled reactions, 67 

 Cow, stomach of, 518 

 Cowbird, 820 

 Cowpers glands, 123. 570 

 Cowpox, 543 

 Coxa, 308 



Cranial nerves, 591, 592, 593 

 Cranium, 390, 397, 429, 510 

 Crayfish, 293-300 



muscle innervation in, 333 

 Creeper fowl, 680 

 Cretaceous period, 723 

 Cretin, 612 

 Crinoidea, 370, 838 

 Critical periods, 138 

 Croaking, 408 

 Crocodiles, 465 

 Crocodilia, 465, 840 

 Crocodilus, 840 

 Cro-Magnon men, 749 

 Crop, 81, 276, 309, 475, 518 

 Cross, dihybrid, 656 



monohybrid, 653 



test, 655 

 Crossing over, 664 

 Crossopterygii, 442, 446, 840 

 Crotalus. 840 

 Crotaphytus, 453, 840 

 Crown, of tooth, 51 6 



Crustacea, 291, 292-305, 836 



endocrine organs of, 328 

 Cryptorchidism, 628 

 Crystalline style. 255 

 Ctenoid scale, 441 

 Ctenophora, 199, 832 

 Cuckoo, 820 

 Cuculiformes, 841 

 Cuculus, 841 



Cucumaria frondosn, 373 

 Cumacea, 836 

 Curare, lOl 



Curve of normal distribution, 675 

 Cushings syndrome, 620 

 Cutaneous artery. 409 

 Cuticle, 55, 227, 267 

 Cuticulin, 326 

 Cuttlefish, 265 

 Cuviei, Georges. 11. 146 

 Cyanide, 53 

 Cycles, diurnal. 279 



lunar. 279 



metabolic, 22 



seasonal, 279 

 Cycloid scale, 441 

 Cycloposthiuni, 170 

 Cyclostomata. 429. 839 

 Cyclotron. 20 

 Cystic duct. 520 

 Cystidea, 838 

 Cytoplasm, 14 

 Cytoplasmic bridges. 1 56 

 Cytoplasmic inheritance, 689 



Dams, 825 



Daphnia, 300, 342 



Darwin, Charles, 281, 698 



Dasyatis, 434 



Dasypus, 842 



Da Vinci, Leonardo. 9 



Deamination, 29, 82. 526 



"Death feigning". 342 



Decapoda, 293, 305, 836 



Decarboxylation, 74 



Deciduous forest biome, 791 



Decomposer organisms, 755 



Deep-sea animals, 796 



Deer, 499 



Defecation, 515 



De Humani corporis fabrica, 9 



Dehydroepiandrosterone, 619, 627 



Deletion, 685 



Demospongia, 176, 832 



Dendrite, 60 



Dentary bone, 466, 511 



Denticles, 275 



Dentin, 516 



Depolarization, 585 



