The Study of Animal Life 



372 



Caterpillars, 50, 51 

 Cats and clover, 29 

 Cave-animals, 334 



livision, 158-^33 



, -.128, 147, 179-183 



Jentipedes, 241 

 Cestoda, 229 

 Chaetopoda, 231-233 

 Challenger Expedition, 5, 6 

 Chamseleons, 52 

 Chemical elements, 135 



influences in environment, 309, 



Circulation, 146 

 Classification of animals, 8-n 

 Coelenterates, 222-228 

 Cold, effect of, '313 

 Colonies, 70, 71 

 Colour-change, 52, 53 

 Colouring, protective, 48, 49 



variable, 49-51 

 Colours of animals, 49-53 



of flat-fishes, 315 

 Commensalism, 68, 69 

 Competition, internal, 67 

 Concealment of animals, 47 

 Conjugation, 214 

 Consciousness, 150-152 

 Co-operation, 69 

 Corals, 26, 27, 227 

 Coral snakes, 59 

 Courtship of birds, 96 



mammals, 96 



spiders, 101-105 

 Crabs, masking of, 61, 62 



and sea-anemones, 68, 69 

 Cranes, gregarious life of, 73 

 Crayfish, 25 

 Crocodilians, 263, 264 

 Cruelty of nature, 43-45 

 Crustacea, 239, 240 



life-history of, 198-202 

 Cuckoo, 114, 115 

 Cuttlefish, 52, 66 

 Cyclostomata, 252 



DARWIN, Charles, 292-296 

 Erasmus, 288, 289 



Deep-sea fishes, 256 



life, 6 



Descent of man, 341-345 

 Desiccation, 41-43 

 Digestion, 145 

 Distribution of animals, 3-8 

 Disuse, results of, 305, 306 

 Division of labour, 69-71, 143, 



144 



Dormant life, 41-43 

 Drought, effect of, 41-43 



EARTHWORMS, 22-24 



Echinoderms, 10, 65, 66, 235-238 



Ectoderm, 196 



Eggs, 191, 192 



Elaps, 59 



Elephant hawk-moth, 59 



Encystation, 41 



Endoderm, 196 



Environment, 306-319 



Ephemerides, 106, 107 



Epiblast, 196 



Epigenesis, 324 



Evolution, evidences of, 273-281 



factors of, 299-302 



theories, history of, 282-301 



of sex, 1 88 

 Extinct types, 206, 207 



FAMILY, evolution of, 91 



life, 91 

 Fats, 134 



Feigning death, 66 

 Fertilisation, 193-195 

 Filial regression, 338 

 Fishes, 9, 253-256 



parental care among, 109, no 

 Flight of birds, 123, 124 

 Flowers and insects, 28, 29 

 Flukes, 229 



Food, influence of, 310-313 

 Freshwater fauna, 6-8 

 Friar-birds, 59 

 Frog, 258 

 Function, influence of, 303 



GASTIUEA theory, 197 



