INDEX 



575 



Color blindness, 521 

 Comb jellies, 264 

 Commensal ism, 122, 166 

 Comparative anatomy. 553 

 Compound, 36 

 Compound eyes, 191, 215 

 Condor, 465 

 Conjugation, 70 



Paramecium, 104 

 Conservation, 472 

 Contractile vacuole, 88, 103 

 Controlled experiment, 5 

 Copperhead snake, 393 

 Copulation, 142, 175 

 Coral, 130 

 Coral snake, 394 

 Corn ear worm, 211 

 Corpus luteum, 362 

 Cortin, 361 

 Cortisone, 361 

 Cotton boll weevil, 211 

 Cowbird, 421 

 Crabs, 194 

 Crane flies, 258 

 Cranial nerves, 321 

 Cretinism, 358 

 Crickets, 222, 243 

 Crinoidea, 297 

 Crocodiles, 385 



Crossing over (chromosomes), 512 

 Crustacea, 184 

 Crystalloid, 43 

 Ctenophora, 264 

 Cuttlefish, 282 

 Cyclops, 196 

 Cyclostomes, 366 

 Cytology, 15 

 Cytoplasm, 19 



Damsel flies, 242 

 Dance of the bees, 232 

 Daphnia, 195 

 Darwin, Charles, 490 

 De Graaf, Regnier, 490 

 Dermaptera, 245 

 Desert, 478 

 Desert rat, 12 

 Diabetes, 352, 360, 363 

 Diabetogenic hormone, 364 

 Diaphragm, 426 

 Dibothriocephalus latus, 151 



Diffusion, 51 

 Digestion, 58, 64 



amoeba, 87 



hydra, 120 



Paramecium, 102 



scypha, 110 

 Digestive system, 71 



ascaris, 155 



clam, 274 



crayfish, 188 



earthworm, 170 



embryology, 530 



frog, 330 



man, 330 



planaria, 137 



starfish, 292 

 Dihybrid cross, 510 

 Diplopoda, 208 

 Diptera, 256 



Dispersal of animals, 462 

 Dobson flies, 254 

 Dodo bird, 466 

 Dogs, 436 

 Dolphin, 76, 443 

 Dominant genes, 505 

 Doodlebug, 253 

 Dragonflies, 224, 242 

 Drone bee, 227 

 Drosophila, 509, 519 

 Duckbill, 428 

 Dumdum fever, 96 

 Dysentery, amoebic, 90 



Eagles, 415 

 Ear, human, 326, 327 

 Earwigs, 245 

 Echinococcus, 152 

 Echinoderms, 288 

 Echinoidea, 295 

 Ecology, 16, 462, 472 

 Ectoderm, 525 

 Ectoparasites, 178 

 Edentata, 449 

 Eel, lamprey, 366 



mud, 380 

 Egestion, 64 

 Eggs, 111 



bird, 382 



parasite, 165 



reptile, 382 

 Electron, 38 



