Index 873 



Continuity of germ plasm, 523, 747 



of organisms, 732-749 



physiologic, 363 

 Continuous variation, 723 

 Contractility, 47, 498 

 Control group, 22 

 Conus arteriosus, 332,* 430, 430* 

 Convolution, 503 

 Coordination, 494-513 

 Copepod, 317,* 543 

 Copulation, 372, 389,* 391, 392, 406 

 Coral, 249, 290, 292,* 536 

 Cord, spinal {see Nervous system) 

 Corium, 459, 460* 



Cork, 141,* 261 {see also Tissues, plant) 

 Corn, borer, 568* 



hybrid, 704* 



Indian (maize), 146,* 209-211 



Cornea, 397, 497,* 505 



Corolla, 145,* 224 



Corpus luteum, 509, 512, 516 



Corpuscles {see Tissues, blood) 



Correlation, 239 {see also specific or- 

 ganisms) 



Corrodentia {see Insects) 



Cortex, 141,* 145,* 214, 216, 220, 

 223,* 354,* 503 



Cortin, 511 



Cotyledon, 110, 140,* 144,* 148, 194, 



202, 204, 207-213 

 Coxa, 394, 400, 401* 

 Crab, 318, 319, 323,* 544, 547 



horseshoe (king), 319, 325* 

 Crane fly {see Insects) 

 Craniata, 329 



Cranium, 329-343, 423, 462* 

 Crayfish, 318, 320,*-322,* 543 



appendages, 577* 

 Cretin, 508,* 511 

 Cricket {see Insects) 

 Crinoidea, 304, 307* 

 Cristispira (in moUusca), 535 

 Crocodile, 340 

 Cro-Magnon man, 589 

 Crop, 308,* 312,* 385,* 386, 394, 396* 

 404 



Cross, heredity, 686, 695, 696,* 698 

 sex-influenced, 703 

 sex-linked, 699-702, 700*-702* 

 Crossing over of genes, 695, 697 

 Crustacea, 317,* 318-324, 543 

 Crystalloid, 75 



Ctenophora, 291-293, 292,* 537 

 Cuff, 30 



Culex (mosquito), 411,* 569* 

 Cup fungus, 127,* 129 

 Cuticle, 141,* 145,* 147,* 295, 296,* 



298, 358,* 373, 379, 381, 



387,* 393, 459 



Cutin, 39, 56, 214, 215,226 



Cuttlefish (sepia), 311, 542 



Cuvier, George, 802 



Cyanophyta, 109, 113, 113,* 151-155, 



249 

 Cycadales (sago palm), 142,* 203, 204 

 Cycas, 142,* 203, 204 

 Cycle, carbon, 650,* 651 



estrous, 516 



nitrogen, 649, 650* 



oxygen, 650,* 652 

 Cyclops, 317,* 318 

 Cyclosis, 346, 353, 359, 360, 366 

 Cyclostomata {see Lamprey) 

 Cyst, 296,* 297, 358,* 360, 377, 377,* 



379, 787 

 Cysticercus, 379 

 Cytogene {see Plasma gene) 

 Cytogenetic, 673 

 Cytology, 24 



Cytolymph (see Cell sap) 

 Cytopharynx, 278,* 351, 358 

 Cytoplasm, 39, 40,* 47, 54, 62, 63,* 



66,* 70, 156,* 344-367 

 Cytoplasmic gene, 357 



granule, 40* 



strand, 40,* 118, 153, 157, 162, 164 

 Cytosome, 39, 350, 358, 359 



D 



Daddy longlegs, 319, 326,* 547 



Damsel fly {see Insects) 



Daphnia, 324,* 543 



Dark and light bands (striated mus- 

 cle), 467, 468 

 field, 32, 33 



Dart sac, 311,* 312* 



Darwin, Charles, 803 



Data, 23 



Deafness, heredity, 717* 



Defense of body, 518, 519 



Demospongia, 281 



Dendrite, 47, 54, 54,* 501 



Denitrification, 649, 650* 



"De novo," 826 



Dentalium, 314, 316* 



Dentine, 464* 



Dermis, 421, 422,* 459, 460* 



Descent with change (evolution), 24, 

 94, 732-749 



Desmid, 115,* 116, 154, 159 



Determinate variation, 724 



Development, 101, 732-749 {see also 

 Embryology) 



Devilfish (octopus), 316,* 542 



Diabetes, heredity, 716* 



Dialysis, 827 



Diaphragm, 340, 470* 



Diarrhea. 784 



