SUBJECT INDEX 



743 



Lycaon pictus, breeding season of, 50 sq. ; 

 period of gestation in, 51 



Lygceus bicrucis, X chromosome in, 673 ; 

 Y chromosome in, ib. ; synapsis, ib. ; 

 number of chromosomes in, ib. ; di- 

 morphism of spermatozoa in, ib. 



Lymantria, intersexuality in crosses of 

 species of, 694 



Lyre-bird, phenomena associated with 

 breeding in, 27 



Lysine, 288, 304 sq. 



M 



Macacus, cestrous cycle in, 57 sq. ; period 

 of gestation in, 59 ; menstruation in, 

 89 .on. 



Macacus cynomolgus, menstruation in, 58 



Macacus fascicularis, menstruation in, 58 



Macacus nemestrinus, cestrous cycle in, 

 58 ; period of gestation in, 59 ; pro- 

 chorion of, 406 I 



Macacus rhesus, 269 ; breeding season in, j 

 57 sq. ; menstruation in, 58 ; menstrual 

 cycle in, 84 sqq. 



Macacus sinicus, menstruation in, 58 



Mackerel, spermatozoa of, 306 



Macropus ruflcollis, breeding season in, 36 



Macrocytes, 97 



Magnesium, in egg of fowl, 278 ; meta- 

 bolism of, during pregnancy, 519 ; in 

 foetus of man, 547 ; in pregnancy, 550 ; 

 in milk, 594 ; in ash of pup, 595 ; in 

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



Maize, in- breeding in, 217 



M aja squinado, vitellorubin in egg of, 

 294 ; pigment in egg of, ib. ; vitello- 

 lutein in egg of, ib. ; lipochromes of, 

 ib. sq. 



Malayan hedgehog, cestrous cycle in, 55 



Mammae in pregnancy, 559 



Mammalia, breeding season in, 24, 365 

 sq. ; periodicity in breeding in, 29 sq. ; 

 corpus luteum of, 146 ; fertilisation in, 

 182; cross-fertilisation in, 211 ; poly- 

 embryony in, 229 ; prostate gland in, 

 247 ; respiratory quotient of embryos 

 of, 286 ; corpus luteum in non-placental, 

 367 ; sex-determination in, 678 ; her- 

 maphroditism in, 689 ; longevity in, 

 722 



Mammary and foetal growth, relation 

 between, 609 sqq. 



Mammary gland, 586 ; cycle of, 372 sq. ; 

 number of, in Centites, 586 ib. ; in man, 

 ib. ; in guinea-pig, ib. ; in rabbit, ib. ; 

 position of, in Primates, ib. ; in Cheirop- 

 tera, ib. ; in Sirenia, ib. ; in elephants, 

 ib. ; in sloths, ib. ; in Ungulata, ib. sq. ; 

 in Cetacea, 586 ; of cow, ib. ; of sow, 



587 sq. ; of Monotremata, 587 ; of 

 Echidna, ib. ; of male, ib. ; structure of, 



588 sqq. ; pigment of, ib. ; alveoli of, 



589 ; theories of secretion of, 591 sqq. ; 



normal growth of, 605 sqq. ; growth of, 

 in rabbit, ib. ; growth of, in horse, 606 ; 

 growth of, in man, 607 ; during preg- 

 nancy, in man, 608 ; development of, 

 during extra-uterine pregnancy, 611 ; 

 effect of fcetal extract on, ib. sqq. ; 

 secretion of, in virgins, 614 sq. ; during 

 pseudo-pregnancy, 616 sq. ; of pseudo- 

 pregnant rabbit, 617 ; in pseudo- 

 pregnancy, and in pregnancy, 617 sq. ; 

 growth of, in latter part of pregnancy, 

 618 ; before ovulation in rabbit, 619 ; 

 before ovulation in polycestrous animals, 

 ib. ; correlation of, with generative 

 organs in guinea-pig, ib. sq. ; effect 

 of pituitary gland extract on, 621 ; 

 effect of placenta extract on, ib. 



Mammary growth, factors concerned in, 

 608 sq. 



Mammary secretion, theories of, 591 sqq. ; 

 factors concerned in, 608 ; after 

 menopause, 615 



Mammary tissue of virgin rabbit, 617 



Man, menstruation in, 59 sqq., 358 sqq. ; 

 oestrus in, 64, 132 ; evidence of 

 primitive breeding season in, 64 sqq. ; 

 menstrual cycle in, 74 sqq. ; uterine 

 mucosa in, 77, 81, 492 ; ova of, 123 sq., 

 404, 491, 494, 498 ; number of chromo- 

 somes in, 126 ; ovulation and menstrua- 

 tion in, 132 sq. ; discharge of ova into 

 Fallopian tube in, 135 ; formation of 

 corpus luteum in, 140 ; degeneration 

 of corpus luteum in, 147 ; cells of 

 Sertoli in, 163 ; spermatic! in, ib. ; 

 spermatozoa of, 168 ; artificial in- 

 semination in, 176, 647 sq. ; movements 

 of spermatozoa in, 173 sq. ; length of 

 vas deferens in, 239 ; uterus masculinus 

 in, 242 ; composition of ash in, 297 ; 

 composition of semen in, ib. ; effect 

 of castration in, 321 n., 323 ; ovario- 

 tomy in, 340, 347 ; transplantation of 

 ovaries in, 348 ; ovariotomy during 

 pregnancy in, 370 ; yolk-sac in, 415, 

 425 sq. ; " Haftstiel " of, 423, 494, 500 ; 

 embryo of, 426, 500 ; tubal pregnancy 

 in, 492 ; placenta of, ib. sqq. ; decidua 

 serotina of, 493, 502 ; implantation 

 cavity in, 493 ; blastocyst of, 493, 

 496, 498; " Gewebspilz !> of, 493; 

 hypoblast of, ib. ; mesoblast of, ib. ; 

 trophoblast o'f, 494, 496 sq., 499; 

 syncytium of, 494 sq. ; uterus of, during 

 pregnancy, 495 ; " Detrituszone " of, 

 496 ; implantation cavity of, 497 ; 

 decidua of, 497, 499 ; compacta of, 498 

 sq. ; spongiosa of, 498 ; " Eikammer " of, 

 499 ; glands during pregnancy in, ib. ; 

 "Zellsiiulen" of, 500; " Haftzotten " 

 of, 501 ; syncytium of, 502 ; symplasma 

 of, ib. ; " Fibrinstreifen " of, ib. ; 

 decidual cells of, ib. ; uterine glands of, 

 ib. ; glycogen metabolism in placenta 

 of, 503 ; fat metabolism in placenta of, 



