596 



INDEX 



Earthworm : general characters, 

 318, ^41 ; metameric segmenta- 

 tion, 319; coelome and enteric 

 canal, 320, 325, 328, 342, 343, 

 34$ ; cell-layers, 321, 34^; blood- 

 system, 328, 343, 344, 34J ; ne- 

 phridia, 331, 343, 344, 34s; 

 nervous system, Hit 344 t dififer- 

 entiation of organs and tissues, 

 335 ; reproduction and reproduc- 

 tive organs, 336, 343, 343 ; de- 

 velopment, 340, 562 



Ecdysis, 355 



Echinoderniata, 397 



Ectoderm, 202, 209, 293, 304, 307, 

 340, 369, 454, 558 



Ectoplasm, 231 



Efferent duct of spermary, 193, 338, 



451 



Egestion, 233 



Egg of fowl, 547, 555,5^6 



Egg-cell, see Ovum 



Egg-sac, 337 



Elasmobranchii, 415 



Embryo, 9, 200 ; and see under 

 various types 



Embryology, 217 



Embryonic membranes, 578, jSy 



P2mulsification of fats, 75 



Enamel, 418, 429, 493 



Enamel-organ, 429 



Encystation, 232, 244, 254, 272, 279 



Endoderm, 202, 210, 293, 298, 304, 

 307, 340, 369, 454, 55S, 565 



Endoderm-lamella, 309, 310 



Endolymph, 188 



Endolymphatic duct, 1S7, 420, 449 



Endoparasite, see Parasite 



Endoplasm, 231 



Endophragmal system, 349 



Endopodite, 350 



Endoskeleton : Fivg, 16, 35, 205 ; 

 Lancelet, 406 ; Do,^fish, 419 ; 

 Rabbit, 470 ; development of in 

 Vertebrates, 576 



Endostyle, 408 



Energy, conversion of potential into 

 kinetic, 235 ; source of, in chloro- 

 phyll-containing organisms, 248 



Enteric canal : Frog, 23, 204 i" 

 Earthworm, 320, 327 ; Crayfis'h, 

 356 ; Mussels 386 ; L^nce/el, 405; 

 408 ; Dox'fish, 429 ; Rahbh, 490- 

 499 ; development of in Verte- 

 brates, 204-Jio, 571 



Enteric epithelium, 322, and see 

 Epithelium 



Enteroccele, 561 



Enteron or enteric cavity, 291, 304, 

 308, 358 - 



Epencephalon, 566 



Epiderm : Frog, 128; Earthworm, 

 320, 321 ; Crayfish, 355 ; Mussel, 

 385 ; Lancelet, 411 ; Dogfish, 

 417 ; Rabbit, 468 



Epididymis, 451, 521, 576 



Epiglottis, 495, 500 



Epipharyngeal groove, 408 



Epiphysis of Vertebra, 480, 4S6 



Epipodite, 352 



Epistoma, 349 



Epistylis, 281, sSS 



Epithelial cells : columnar, 107 ; 

 ciliated, 109; glandular, 130 et 

 scq. ; sc|uamous, no; stratified, 

 128 



Epithelium, 109, 311 ;ccelomic, 322, 

 and see Peritoneum ; deric — see 

 Epiderm ; enteric, 322, and see 

 Endoderm 



Equivocal generation, see Abie- 

 genesis 



EtTGLENA : occurrence and general 

 characters, 251 ; movements, 251 ; 

 structure, 251; nutrition, 252; 

 resting stage, 254 ; reprodtiction, 

 254; animal or plant? 255; 

 practical directions, 3jQ 



Eustachian tube or recess, 17, 189, 



495. 519 



Eustachian valve, 506 



Evolution : organic, 221, 285 ; of 

 animals and plants, 258 



Excretion, 148, 150, 235 



Excretory organs, see Kidney and 

 Nephridium, and compare Con- 

 tractile vacuole 



Exopodite, 350 



