824 



INDEX 



Dominant characters, 391-393, 398-402, 



414. 415, 418 

 Draco, 719 

 Dragonfly. 176 



fossil, 592, 594 



metamorphosis, 597 

 Drone bee, 614 

 Drosophila, 312, 403, 405. 412, 413 



melunogusler, 2>91, 399. 411 



sex types. 405 

 Duckbill, 728, 755, 757, 799 

 Dtigesia higiibris, 501 



tigrina, 499-502, 504, 505 

 Duodenum, 189, 190, 193, 256, 696 

 Dura mater, 301, 302, 707 

 Dwarfs. 257, 258, 262, 263, 272, 275 

 Dyspnea, 241 



E 



Eardrum, 316, 317, 375, 602, 611, 720, 



745 

 Earthworm, 176, 178, 555-567, 798 



cross section, 561 



ecology, 555 



general structure, 558 



mating, 557 



regeneration, 565 



seasonal locations, 556 

 Echidna, 755, 756 



Echinodermata, 651-661, 663, 664, 798 

 Echinoderms, 575 

 Echinoidea, 652, 654, 798 

 Echiurus, 534 

 Ecological relationships, 3 

 Ecology, 2, 3, 792 



Ectoderm, 363, 365-370, 372, 373, 375 

 Ectoparasites, 97, 98 

 Eels, common. 670 



lamprey, 666, 667, 798 



migration, 680 



true, 666 

 Effector cells, 280, 293 

 Efferent neuron, 287, 295, 297 

 Efts, 683 



red, 684, 686 

 Eggs, 331, 335, 360, 361 



Amphioxus, 365 



caddis fly, 79 



crayfish, 579 



Donacia, 79 



frog, 367-370 



hen, 747, 749 



honeybee, 614 



human, 336, 347 



midges, 79 



Psephenus, 79 



snail, 79 



toad, 682 



tunicate, 362, 364 



turtle, 726 



Eggs — {Continued) 



water mite, 79 



whirligig beetle, 79 

 Egret, American, 740 

 Eichorn, 538 

 Eijkman, C, 172 

 Elasmobranchs, 668 

 Electroencephalograms, 307, 308 

 Electrolytes, 17, 18 

 Electrons, 13, 14, 16. 17 

 Elephant, 70, 763, 767, 799 

 Elephantiasis, 100, 528, 529 

 Ellis, 456 

 Elvers. 680 

 Embioptera, 593 

 Embolus, 212 

 Embryo, 351, 352, 359-363, 366. 368- 



370. 376, 378-385 

 Emulsion, 19, 22 

 Encephalon, 705 

 Enchytraeus alhhiiis, 565 

 Endbrain, 302, 303, 305 

 Endocrine glands, 4, 32, 257, 259, 278, 703 



human, location of. 256 



secretions, 258, 267, 275, 277 

 Endocrinology, 259 

 Endoderm, 363, 365-370, 375, 376 

 Endolymph, 317 

 Endomixis, 333, 452 

 Endoparasites, 98 

 Endoprocta, 545 

 Endoskeletons, 136, 141, 142 

 Energy, 1, 9, 10, 12, 19, 29, 53, 226, 227 



atomic, 10-13, 73 



chemical, 10-12, 56, 57, 65, 267 



conservation of, 57 



kinetic, 10, 11, 24, 56 



muscular, 162 



nuclear, 15 



potential, 10, 11, 56 

 Ensis, 642 

 Entameba blattae, 443 



gingivalis, 443 



histolytica, 429. 443 

 Entema sirtalis, 714 

 Enterobiasis, 100 

 Enterobiiis vermiciilaris, 524 

 Enterocrinin, 267, 269 

 Enterogasterone, 267, 269 

 Enterokinase, 187, 192. 193 

 Enteron, 370, 372, 374, 375, 466, 472, 474, 



475, 480, 481, 496 

 Entomostracans. 586-588 

 Entrobiciihi alfredugesi, 97 

 Environment, 2, 3. 72 



biological. 86-90 



chemical conditions, 76 



history of, 68 



internal. 4 



and size of animals, 68 



types, 74 



