6l2 



INDEX 



EARTHWORM : general characters, 



326 ; metameric segmentation, 



327 ; ccelome and enteric canal, 

 328, 333, 335, jtf, 358; cell- 

 layers, 329, 358; blood-system, 

 337, 355* 357, 35$ ;' nephridia, 

 340, 355 ', 357 > 358', nervous 

 system, 342, jtf, J5<?; differ- 

 entiation of organs and tissues, 

 344 ; reproduction and reproduc- 

 tive organs, 345, jjj, jj6 ; de- 

 velopment, 349, 579 



Ecdysis, 369 



Echinodermata, 412 



Ectoderm, 202, 209, 298, 311, 314, 



349, 384, 470, 574 

 Ectoplasm, 231 

 Efferent duct of spermary, 193, 347, 



467, 538 

 Egestion, 233 

 Egg of fowl, 564, 573, 604 

 Egg-cell, see Ovum 

 Egg-sac, 346 

 Elasmobranchii, 431 

 Embryo, 9, 200 ; and see under 



various types 

 Embryology, 217 

 Embryonic membranes, 596 

 Emulsification of fats, 75 

 Enamel, 445, 510 

 Enamel-organ, 445 

 Encystation, 232, 244, 254, 275, 



283, 285 

 Endoderm, 202, 210, 298, 303, 311, 



314, 349, 384, 470, 574 

 Endoderm-lamella, 315, 317 

 Endolymph, 188 

 Endolymphatic duct, 187, 436, 



465 



Endoparasite, see Parasite 

 Endoplasm, 231 

 Endophragmal system, 363 

 Endopodite, 364 

 Endoskeleton : Frog, 16, 35, 205 ; 



Lance let, 422 ; Dogfish, 435 ; 



Rabbit^ 487 ; development of in 



Vertebrates, 594 

 Endostyle, 424 

 Energy, conversion of potential into 



kinetic, 235 ; source of, in 

 chlorophyll-containing organisms, 

 248 



Enteric canal : Frog, 23, 204 ; 

 Earthworm, 328, 335 ; Crayfish, 

 370 ; Musset, 401 ; Lance let, 

 424 ; Dogfish, 444 ; Rabbit, 507- 

 516; development of in Verte- 

 brates, 204-210, 589 



Enteric epithelium, see Epithe- 

 lium 



^Enteroccele, 578 



Enteron or enteric cavity, 296, 298, 

 311, 314, 330, 373 



Epencephalon, 584 



Epiderm : Frog, 128; Earthworm 

 328, 329 ; Crayfish, 369 ; Mussel, 

 400 ; Lance let, 419 ; Dogfish, 

 433; Rabbit, 484 



Epididymis, 467, 538, 594 



Epiglottis, 512, 517 



Epipharyngeal groove, 424 



Epiphysis, 497, 503 



Epipodite, 364 



Epistoma, 363 



Epistylis, 277 



Epithelial cells : columnar, 107 ; 

 ciliated, 109; glandular, 130 et 

 seq. ; squamous, 1 10 ; stratified, 

 128 



Epithelium, 109, 3i9;ccelomic, 330, 

 and see Peritoneum ; deric see 

 Epiderm ; enteric, 330, and see 

 Endoderm 



Equivocal generation, see Abio- 

 genesis 



EUGLENA : occurrence and general 

 characters, 251 ; movements, 

 251; structure, 251; nutrition, 

 252 ; resting stage, 254 ; re- 

 production, 254 ; animal or 

 plant ? 255 ; practical directions, 



259 



Eustachian tube 'or recess, 17, 189, 



5", 536 



Eustachian valve, 523 



Evolution : organic, 221, 292 ; of 



animals and plants, 258 

 Excretion, 148, 150, 235 



