258 



INDEX 



Basket- work, 151 



Bates, H. W., 73 



Batrachians, 15, 48, 51, 59, 60, 70, 140 



Bears, 10, 42, 86, 194 



Polar, 1 68, 169, 243 

 Beaver, 46, 176, 177, 220 

 Bee-eater, 153 



Bees, 33, 55, 72. 73, "7, 132, 205 

 Beetles, 33, 70, 128 

 Beisa, 89 



Berries of lobster, 121 

 Binturong, 85 

 Bipinnaria larva, 23 

 Birds, 



ancestors, 159, 240 

 brood-care, 147 

 domesticated, 204 

 down of, 97, 101 

 duration of youth, 49 

 eggs of, 147 

 feeding young, 242 

 imitation by, 252 

 insectivorous, 72, 161 

 intelligence, 50 

 learning to walk, 240 

 limitation of family, 148 

 longevity, 49 

 patterns, 79 

 preen-gland, 184 

 sexual coloration, 69 

 size and longevity, 49 

 skin glands, 184 

 talking, 253 



Birds-of-paradise, 49, 62, 66, 69, 109 

 Birds-of-prey, 49, 105, no, 150, 152, 153, 



154, 242 

 Bison, 46, 115 

 Bitterling, 138 

 Bittern, 153 

 Bivium, 119 

 Blenny, 138 



Blood, 63, 156, 214, 225 

 Blow-fly, 31 

 Blubber, 243 

 Blunt, Captain E., 56 

 Boa, 146 

 Bonavia, Dr., 81 

 Bongo, 91 

 Bontebok, 88 



Bottle-feeding, 243 



Bow-fin, 136 



Brain, convolutions of, 226 



development of, 226, 227 



grey matter, 226 



and imitation, 252 



of Primates, figured, 227 



as storehouse of experience, 237 



structure of, 226 



and duration of youth, 41 

 Brain-growth in youth, 229 

 Breeding plumage, 79, 1 12 

 Breeding season, colours of, 69, 113 

 Bristle-tail, 33 

 Brittle star, 120 

 Brocket-deer, 92 

 Brood-care, 120 



in birds, 145, 159 



in frogs and toads, 140 



in mammals, 163 



in rodents, 176 



in spiders, 122 



in lower vertebrates, 134 

 Brood-pouches, 121 



Brush turkey, 97, 102, 107, 150, 159, 194 

 Budgett, J. S., 135 

 Buffalo, 170 

 Bufo y 170 

 Bugs, 70, 82 

 Bullhead, 136 

 Bustard, 101, 154 

 Butter, 1 86 

 Butterfish, 135 

 Butterflies, 55, 70, 73, 118^ 

 Button quails, 70, 109, 154 



CALVES of ruminants, 171 

 Camel, n, 46, 93, 171, 218 

 Campodeiform larva, 33, 55 

 Canary, 205 

 Cane-sugar, 186 

 Cannibal larvae, 132 

 Captivity, effects of, 207, 220 

 Capybara, 175, 220 

 Caracal, 10, 41, 85 



tame, 42, 213, 230, 247, 248, 249 

 Care, parental, 118, 168, 245 

 Cariama, 154 

 Carnivores, boxing of, 233 



