740 INDEX 



Ductus endolymphaticus, of frog, 



390 

 of rabbit, 469 



venosus, 659 

 Dung, 9 



Duns Scotus, 708 

 Duodenum, of dogfish, 324 



of frog, 365 



of man, 481 



of pigeon, 408 



of rabbit, 442 

 Duplicidentata, 484 

 Dura mater, 516, 533 

 Dysentery, 65, 77 

 Dytiscus, 227, 247 



Ear of dogfish, 342 



of frog, 390, 639 



of insects, 249 



of pigeon, 415 



of rabbit, 467 



ossicles, 428, 468 

 Earthworm, 157 



alimentary canal of, 162 



bod^^-wall of, 160 



burrowing of, 170 



circulation of, 166, 167 



development of, 670 



dissection of, 172 



excretion in, 164 



external features of, 158 

 openings of, 160 



food of, 157 



habits of, 157 



histology of, 163 



movement of, 168 



nephridium of, 163, 164 



nervous system of, 167, 168, 

 169 



pairing of, 158, 175 



regeneration in, 175 



reproduction of, 172 



reproductive organs of, 185 



section of, 161, 171 



sense organs of, 171 

 Earwigs, 249 

 Ecdysis, 227, 245 

 Echidna, 496 

 Echinococcus, 132 

 Echinodermata, 286, 2g6, 551 

 Echinoidea, 297 

 Echinus esculentus, 298 

 Ectoderm, 187, 621 



of Hydra, 90 



See also Epiblast, Epidermis 

 Ectoparasite, 149, 152, 224 

 Ectoplasm of Amceba, 26. 28 



of Entamceba, 64 



Ectoplasm, of Monocystis, 43 



of Paramecium, 47 



of Vorticella, 57 

 Eel, 592 

 Egg, 5. See also Ovum 



sac of earthworm, 173 

 Eimeria, 151 



Elasmobranchii, 544, 551, 553 

 Elastic fibres, 514 

 Elastin, 320, 514 

 Elephantiasis, 145 

 Elephants, 491 

 Elytra, 245, 260 

 Embioptera, 250 

 Embryo, 345 



Embr^^ology, 620. See also De- 

 velopment, Life-history 

 Embryonic circulation of chick, 



659 

 of rabbit, 669 



membranes, 651. See also Allan- 

 tois. Amnion 



nutrition, 670 



plate, 664 

 Empusa musccB, 259 

 Enamel, 362 

 Encystment. See Cyst 

 End sac of crayfish, 211 

 Endocrine organs. See Glands, 



ductless 

 Endocuticle, 226 

 Endoderm, 187, 621 



of Hydra, 90, g6. 



See also Hypoblast 

 Endolymph, 390, 468 

 Endomixis, 54 

 Endoneurium, 512 

 Endoparasite, 149, 152 

 Endophragmal skeleton, 201 

 Endoplasm of Amceba, 26, 28 



of Monocystis, 43 



of Paramecium, 47 



of Vorticella, 57 

 Endopodite, 198 

 Endopterygota, 247, 257, 260 

 Endostyle, 304, 626 

 Endotheliam, 537 

 Energy, 10 



forms of, 13 

 Energy-producing factors in food, 8 



storage of, by plants, 21 

 Entamoeba coli, 62 



histolytica, 62, 63, 64 

 Enterobius, 146 

 Enteroccele, 627 

 Enterokinase, 444 

 Enteron, 624 



of Hydra, 90 



