730 



SUBJECT INDEX 



Arbacia pustuhsa, chemistry of sperma- 

 tozoa of, 306 



Area vasculosa, 412, 415 



Arenicola, development of, 227 



Arginine, 288, 304 sq., 306, 309, 312 



Armidillo, polyembrony in, 229 



Arrhenoplasm, 690 



Artery during senescence, 718 



Arthropoda, breeding season in, 10 sqq. ; 

 effects of castration in, 325 sq. 



Artificial fertilisation, 185, 194, 227 sq., 

 313 



Artificial insemination, see Insemination 



Artificial parthenogenesis, 185, 194, 230 

 sqq., 313, 317 sq. 



Arvicola, clitoris in, 261 



Arvicola agrestis, cestrous cycle in, 37 



Arvicola glareolus, cestrous cycle in, 37 



Ascaris, maturation of ova in, 125 



Ash, composition of, in pup, 595 ; in 

 milk of dog, ib. ; in serum of dog, ib. 



Ass, source of foetal iron in, 434 



Assortive mating, among gametes, 214 sq.; 

 in Paramcecium, 221 



Astacus fluviatilis, see Crayfish 



Asterias, maturation of ova in, 129 n. ; 

 fertilisation in, 194 sq., 235 sq. ; hy- 

 bridisation of, 212 ; life cycle in, 227 



Asterias forbesii, parthenogenesis in, 231 

 sq. 



Aslerina, fertilisation in, 235 



Atretic follicle, 149 sqq. 



Atrophic foetuses, 154, see Foetal atrophy 



Aves, allopterotism in, 340 sq. ; ovari- 

 otomy in, 341 sqq. See also Birds 



Axis, oestrous cycle in, 45 



Axolotl, breeding season in, 20 ; poly- 

 spermy in, 183 ; fertility in, under 

 experiment, 631 



B 



Baboon, menstrual process in, 57 sq. 



Baby, respiratory quotient of, 505 



Badger, cestrous cycle in, 54 n. ; period 

 of gestation in, ib. ; placenta, 448 



" Banchstiel " of primates, 490 



Bandicoot, see Perameles 



Balcenoptera musculus, breeding season in, 

 48 



Barasingha, cestrous cycle in, 43 sq. 



" Barotaxis," 172 



Barrenness, in sheep, 633. See also 

 Sterility 



Bartholin's gland, effect of cestrous on, 

 51 ; secretion of, 264, 268 



Bat, cestrous cycle in, 56 ; dormant 

 spermatozoa in, ib. ; maturation of ova 

 in, 127 sq. ; ovulation in, 131 sq. ; 

 spermatozoa in, 169 ; fertilisation in, 

 183 ; yolk-sac in, 425 ; trophoblast of, 

 487, 489 ; plasmodiblast of, ib. ; cyto- 

 blast of, ib. ; placenta of, 487 sqq. ; 



couche paraplacentaire of, 487 sqq. ; 

 phagocytosis in, 488 ; somatopleur of, 

 489 ; splanchnopleur of, 489 ; amnion 

 of, 490 w. ; placental haemopoiesis, 518 ; 

 size of litters in, 624 sq. See also 

 Vesperugo noctula 



" Bausteine," 463 



Bear, cestrous cycle in, 53 ; period of 

 gestation in, ib. ; fertility in, 626 ; 

 course of sterility in, 629 



Beaver, preplacental blastocyst of, 423 ; 

 placenta of, 475 sq. ; " Haftstiel " of, 

 475 ; megalokaryocytes of, 475 ; tro- 

 phoblast of, 476 ' 



Bees, sex-determination in, 664 sqq. ; 

 hybridisation in, 666 ; longevity in, 721 



Belgium, birth-rate in, 660 



Bibos frontalis, hybridisation of, with 

 Bison americanus, 641 



Bibos gaums, hybridisation of, with Bibos 

 grunnicus, 641 



Bibos grunnicus, hybridisation of, with 

 Bibos gaurus, 641 



Biochemistry of sexual organs, 273 sqq. 



Birds, breeding season in, 4, 21 sqq. ; 

 migration of, 22 sq. ; formation of 

 corpus luteum in, 145 ; biochemistry of 

 sexual organs in, 276 ; secondary sexual 

 characteristics of, under captivity, 629 ; 

 sterility in, ib. sq. ; sex determination 

 in, 678 ; longevity in, 722. See al-so 

 Aves 



Birth, cause of, 573 sqq. ; growth of body 

 before, 703 sq. ; growth of body after, 

 705 sqq. 



Birth-rate, of man, 658 sqq. ; in England 

 and Wales, 659 ; decline in, 659 sq. ; 

 cause of decline in, ib. ; in British 

 colonies, 659 sq. ; in France, 660 ; in 

 Germany, ib. ; in Belgium, ib. 



Bison, oestrous cycle in, 43 sqq. 



Bison americanus, hybridisation of Bibos 

 frontalis and, 641 



Bison bonasus, hybridisation of cow and, 

 642 



Bison frontalis, 641 



Blastocyst, 405, 407 ; of sheep, 421 ; of 

 pig, 427 ; of guinea-pig, 472 sq. ; of 

 hedgehog, 476 ; of shrew, 481 ; of 

 mole, 484 ; of Tupaia javanica, 485 ; 

 of man, 493, 496, 498; fixation of, 

 508 sqq. 



Blastodermic vesicle, 407, 411 ; of rabbit, 

 422 sq., 453 ; of horse, 429 ; of sheep, 

 430 



Blastomere, 407 



Blood, pressure of, during menstruation, 

 63; coagulation of, during menstruation, 

 ib. ; effect of castration on, 392 ; in 

 uterine milk, 434 sq. ; composition of, 

 during pregnancy, 540, 542, 556 sq. 



Bobolink, phenomena associated with 

 breeding in, 27 



Body-weight during pregnancy, 523 sq. 



Bolina hydatina, dissogonie in, 228 n. 



