148 



Index. 



Clucking of hen, instinctive response 

 to, 34, 36 



Co-adaptation, 314 



Coliu, habits of the, 99 



Collins, Mr. F. Howard, 88 



Congenital, term denned, 17 



Connate instincts, 18 



Consciousness, effective, 127 ; func- 

 tion of twofold, 147 



Co-ordination of lower centres, 128; 

 motor, essential in instinctive ac- 

 tivities, 134 



Cornish, Mr. C. J., 68, 102, 239, 249 



Correlation, 295 



Couch, 180 



Cowbirds, 244 



Criterion of choice, 264 



Crouching in young birds, 202 



Crow-blackbird, habit of, 165 



Cuckoo, instincts of, 239 ; American, 

 244 



D 



Darwin, Charles, 40, 44, 116, 159, 

 214, 220, 235, 243, 288, 291, 296, 

 307, 327, 33(5 



Deer, motor co-ordination, 102 



Deferred instincts 18, 136 



Determinate variations, 311 



Dipper, diving, 65 



Direction, sense of, 261 



Distasteful insects, experiments with, 

 43 



Diving in moorhen, 63, 136; in 

 dipper, 65; in hoactzin, 66; in 

 wild duck, 67 



Dixon, Mr. Charles, 233 



Dogs, intelligent action of, 153, 155 



Drane, Mr. K., 109, 110 



Dioue fly, experiments with, 52 



Duck, chirping iu egg, 31 ; pecking, 

 37; drinking, 45; and bees, 53 

 walking, 59 ; swimming, 62 

 paddling, 69 ; tame and wild, 83 

 bathing, 95 ; feigning wounded, 

 249; brought up under hens, 281 



Dyck, Dr. Van. 70. 



E 



Eimer, Prof., 30, 36, 44, 294 

 Elvers, spring migration of, 9 

 Emigration, 338 



Emotions, the, 186; current theory 

 of, 188 ; James and Lange's theory 

 of, 188 ; Marshall's theory of, 192 ; 

 relations to instinctive activities, 

 194, 206; Evolutional value of, 

 207; interpretation of, 207; ex- 

 pression of, 210 



Eve, Mr. A. S., 202 



Experience, role of, 131, 132 ; due to 

 incoming currents, 133 



Fabre, M., 15 



Falcons, training of, 19 ; flight of, 79 



Fascination, 88 



Fear, instinctive, 33, 81 



Feigning dead, 202 ; feigning 



wounded, 248 

 Festing, Major E. K., 159 

 Flight of birds, 69-79 

 Flycatcher, spotted, observation on. 



55-58, 74 

 Foster, Dr. Michael, 266 

 Fowler, Mr. Warde, 175, 297 

 Franrland, Prof. E., 160 

 Frog and Jay, 57 



G 



Galbula ruficauda, 9 

 Gallwey, Sir B. Payne, 67 

 Galton, Dr. Francis, 308 

 Gatke, Herr, 258, 261 

 Geddes, Prof. Patrick, 226 

 Germinal selection, 310 

 Gladstone, Mr. W. E., 343 

 Goldfinches, nesting of, 234 

 Goosander carrying young, 67 

 Grebe diving with young, 69 

 Greenfinch, nest-building of, 236 

 Guinea-fowl, pecking, 37; following 

 duckling, 44; walking, 59; run- 

 ning, 61 

 Guinea-pig, activity at birth, 104; 

 rapid development, 110; sensory 

 development, 110 ; taste and smell, 

 112; sight, 112; sucking, il3 



II 



Habit, denned, 1 ; role of, 283 

 Hare, 104, 109, 110 



