152 



INDEX 



Bang, 145 



Bartholiiii's glands, 33 



Basement membrane, 18 



Basset hounds, 143 



Bat, 61 ; spermatozoa in, 7 



Bateson and Punnett, 116 



Bee, 11 



Bell-animalcule, 6 



Bell, Blair, 26, 57, 104, 127 



VAN Beneden, 61 



Berblingler, 127 



Berthold, 91 



Beri-beri, 139 



Binary fission, 3, 4, 6 



Biparental inheritance, 6, 123 



Birds, 113, 122, 124-5, 128, 130, 

 133-4 ; allantois in, 64 ; effect 

 of warmth or cold on, 13 ; effect 

 of castration, 90 ; of ovariotomy, 

 95 ; testes in, 94 



Birth, cause of, 114 



Birth-control, 148 



Birth-marks, 122 



Birth-rate, variation, 57 ; in man, 

 146 ff., 149 



Births, multiple, 142 



BiSCHOFF, 40 



Bison americanus, 141 



Bitch, 42-3, 45, 51, 84,98, 104, 108-9, 

 142-3 ; uterus in, 30, 80 ; period 

 of gestation, 76 ; see also Dog 



Bladder, 16, 20, 70, 75 



Blakeslee, 141 



Blastocyst, 61-2 



Blood, 93 



Blood clot, 71 



Bloodhounds, 143 



Blood vessels, 43-4, 69, 71, 73, 78 



Boar, spermatozoa in, 7 



Body framework, 3 



Body-stalk, 64, 67, 71 



Body-wall, 3 



Bond, 134 



Bone, 2 



Bonnet, 10 



BORDEU, 91 

 Bos taurus, 141 

 Bovidae, 141 



Brachet, 80 



Brain, 67 



Breasts, at menstruation, 57 ; at 



pregnancy, 74 

 Breech presentation, at birth, 80 

 Breeding seasons, 12, 51, 57 ; 



primitive man, 57 

 Brown-Sequard, 111 

 Bryce, 72 



Buck, vasectomised, 102 

 Budding, 3 



Bulbo-cavernosus muscle, 24 

 Bull, 137 ; prepotency in, 123 ; 



inheritance of fertility through, 



142 

 Bullfinch, 134 



BUNGE, 83 

 BURLINGAME, 118 



Butterflies, 125 



Calcareous concretions, 21 



Calcium in milk, 83 



Calkins, 5 



Canaries, 122 



Canis, 141 



Capon, 93 



Carbohydrates, 1 



Carcinus moenas, 129-30 



Carnivora, 25, 85 



Carr-Saunders, 147 



Cartilage, 2 



Casein, 83 



Caseinogen, 83 



Castration, 86 ; economic reasons 



for, 90, 95, 126 ; effect of, 86-7 ; of 



animals, 86, 89 ; of males, 86-7 ; 



ovarian, 86-7 ; one-sided, 93 ; 



parasitic, 129, 133, 135; purpose 



of, 87 ; psychological effects of, 



87-8 ; testicular. 86 

 Cat, 38-9, 51, 59, 90; period of 



gestation, 76 

 Caterpillar, castration effect, 87 

 Cattle, 47, 128, 141 ; crossing of, 



118; dehorning of, 119 



