736 



SUBJECT INDEX 



Echinus, movements of spermatozoa of, 

 172 sq. ; fertilisation in, 182 ; chromo- 

 somes in, 206 ; fertility in crosses of, 

 211 ; sterility in crosses of, ib. 



Echinus acutus, breeding season in, 14 ; 

 hybridisation in, 211 sj. 



Echinus escfiilentus, breeding season in, 

 14; hybridisation of, 211 sq. 



Echinus microtubarculatus, 315 ; breeding 

 season in, 14 ; oxidation in ovum of, 

 192 



Echinus miliaris, oxidation in ovum of, 

 197 ; "hybridisation of, 211 sqq. 



Eclampsia, 533 sqq., 544 



Ectoderm, 402, «)6 



Ectopic pregnancy, 136 sq., 368 



Eotoplacental cone of mouse, 467 



Ectoplacenta of rabbit, 453 sq. 



Edentata, placenta of, 409 sq., i43, 



Eel, breeding season of, 17 ; sexual 

 activity in, 21 



tegg, respiratory quotient during develop- 

 ment* of, 284 ; caloric value of, 285. 

 See also Ovum • 



Egg formation, see Oogenesis 



Egg-membrane, in Raja, 289 ; in Scyl- 

 lium, ib. ; in Tropidonaiua, ib. ; in 

 Calotes jubatus, ib. ; in Crocodilus 

 bifcyrcaius, ib. ; in Mustelus loivis, ib. ; 

 in frog, 290 ; in perch, ib. ; mucin in, 

 ib. 



Egg-shell, composition of, 276 sjj. 



"Eikammer," of mouse, 467, 470; of 

 man, 499 



Ejaculation mechanism, 262 sqq., 27ff 



Eland, oestrous cyclp in, 45 



Elastin, 289 



Elasmobranchs, breeding season in, 15 



Elephant, periodicity of breeding in, 29 ; 

 oestrous cycle in, 47 ; period of gesta- 

 tion in, ib. ; temporal gland of, 253 ; 

 yolk-sac in, 421 ; position of mammary 

 gland in, 586 ; sterihty in Indian, 628 ; 

 under captivity, 630 ; longevity in, 722 



Eliomys quercinus, oestrous cycle in, 37 



Elk, fertihty in, 626 



Emberiza passerina in captivity, 629 _ 



Embryo, mucin in, 287, 463 ; of opossum, 

 417 ; of man, 426, 500 ; of shrew, 483 ; 

 provision of nutriment for, 521 sq. 



Embryonic knot, 412 n. 



Embryonic shield of Ungulata, 420 



" Embryotrophe," 436, 444 



End-bulbs of penis, 254 



Endo-enzymes, 289 



Endometrium, 72 



Endomixis, in Paramcecium, 223 



End-organs of penis, 254 



" Energy of development," 285, 293 



Energy metabohsm during pregnancy, 

 552 sqq. 



Energy requirement, during sexual rest, 

 519 ; during first pregnancy, ib. ; 

 during second pregnancy, ib, ; of foetus, 

 525 



England and Wales, birth-rate in, 659 



" Entwicklungsarbeit," 363 



Environment, efieot of changed, 222 sq. 



Enzymes, 289 



Eosinophil ceU, 96 sq. 



Epididymis, 160, 268 



Epididymitis as cause of sterility, 645 



Epizootic abortion, 654 sq. 



Epoophoron, 71 



Erectile tissue of penis, 256 sq. 



Erection, mechanism of, 262 sqq. ; nerve 



centre for, 264 sq. ; by nervi erigentes, 



265 ; by sacral nerves, 266 

 Erector clitoridis, 267 

 Erepsin in placenta, 465 

 Erinaceus, foetal membranes of, 425 

 Erinacems europeus, see Hedgehog 

 Epsatz-zellen, 402 

 Erythrocytes, 458 

 Erythrotoxin, 549 



Eucharis muUicornis, dissogonde in, 228 n. 

 Eunice viridis, breedijjg season in, 10 

 Eunice fucata, breeding season in, 10 

 Eunuch, 321 n., 323, 328 

 Eutheria, procestrum in, 107 

 Excentrio placental attachment, 442 

 Excretion, of urea, 532 sq. ; of acetone 



bodies, 544 

 Exogamy, 217 re. 

 " Extractives " in semen, 297 

 Extra-uterine growth, 703 

 Extra-uterine pregnancy, development of 



mammary gland during, 611 



Pseroes Islands, breeding season of 

 anemones in, 8 



Fdko alhidus in captivity, 629 



Fallopian tube, structure of, 70 sqq. 



Fallow-deer/ oestrous cycle in, 44 ; effect 

 of castration on, 322 



False amnion, 412, 414 



Fat, in corpus luteum, 274 sq. ; in ovary, 

 275 ; in egg of fowl, 277 ; oxidation 

 of, 284 ; in tails of spermatozoa, 311 ; 

 in uterine milk, 435 ; in foetus, 458 ; 

 metabohsm of, in placenta, 458 sqq., 

 471 sq., 475, 503 sq. ; metabolism of, 

 in mouse, 471 sq. ; in guinea-pig, 475; 

 metabolism of, in placenta of man, 503, 

 sq. ; metabolism of, in foetal organs, 604 ; 

 metabolism of, during pregnancy, 541 

 sqq., 544 sq, ; absorption of, by maternal 

 organism, 541 ; of maternal organism, 

 541 sq. ; requirement of foetus, 542 sq. ; 

 origin of, in foetus, 543 sq. ; in milk, 594, 

 604 ; formation of, in mUk, 601 q. ; 

 of colostrum, 619 



Fatness, sterility caused by, 632 



Felidse, fertility in, 629 



Feminisation of guinea-pig, 697 sq. 



