INDEX 



285 



Cardium, reactions to shadows, 41 

 Carr, H., and Watson, J. B., 258 

 Casteel, D. B., 231, intelligence of 



Chrysemis, 230 

 Cat, imitation, 256 



intelligence, 166, 236-242, 255 

 Catfish, intelligence, 222 

 Cebus monkey, intelligence, 262, 



264-270 

 imitation, 270 

 Centipedes, males eating eggs of 



female, 96 



Cerceris, homing, 195 

 Cerianthus, geotaxis, 30 



reactions to repeated stimuli, 



144, 145 



Cesaresco, E. M., 258 

 Chemotaxis, 21-29, 70, 75, 76, 187 

 Chick, imitation, 254 



intelligence, 165, 166, 176-178 

 transitory instincts, 99 

 Chilomonas, chemotaxis, 27 

 Chlamydomonas, geotaxis, 29 

 Chromulina, geotaxis, 29 



phototaxis affected by tem- 

 perature, 49 



Chrysemis, intelligence, 230 

 Chimpanzee, imitation, 272, 273 

 intelligence, 262-266, 270, 272, 



273 

 Cladophora, attracting bacteria, 



22 

 Claparede, E., 10, comparative 



psychology, 1, 7 

 Claypole, Prof., imitation in young 



ostrich, 254 

 Clepsine, phototaxis, 44 



reaction to shadows, 41, 42 

 varied behavior, 111, 142 

 Cockroaches, geotaxis, 32 

 Cole, L. J., 61, phototaxis of pyc- 



nogonids, 56 

 phototaxis and image forming 



power of eyes, 56, 57 

 Cole, L. W., 258, intelligence of 

 raccoons, 242-245, 255 



Communication in ants, 213, 214 



in bees, 215 

 Compensatory motions, 39 ff 



in relation to phototaxis, 57 

 Condillac, instinct, 92 



intelligence in animals, 232 

 Consciousness, criterion of, 3 ff 

 Convoluta, tidal rhythms in, 31, 



156 

 Cope, E. D., 279, intelligence of a 



Cebus, 266 

 Cornetz, V., 216, homing of ants, 



193 



Corymorpha, geotaxis, 31 

 Cowles, R. P., learning in Ocypoda, 



184 

 Crayfish, compensatory motions, 



40 

 devouring their eggs and 



young, 95, 96 



instincts as related to reflexes, 

 100 ff 



intelligence, 184-186 

 reflexes, 13 

 Ctenophores, geotaxis, 30 



statocysts, 30, 33 

 Cucumaria, geotaxis, 31 

 Cunningham, J. T., 138 

 Cuvier, F., 279, intelligence of 



orang, 267 

 Cypridopsis, phototaxis changed 



by contact, 50 



Cypris, phototaxis changed by 

 contact, 50 



Daphnia, movements of eye, 57 

 phototaxis changed by con- 

 tact, 50 



Darwin, C. R., 114, 138, 162, 279 

 chimpanzee throwing stones, 



269 



definition of instinct, 91 

 evolution of instinct, 115, 130 ff 

 fear in young ducks, 123 



in young rabbits, 123 

 followers of, 1 



