INDEX 



Accident, comparative unimportance 



of, in experiments, 236 

 Acquirement of meaning, 112 

 Acquisition, perceptual and motor, 189 

 Affection, development of, 403 

 Alexander, Prof. S., 8 

 Altruism, 342 

 Amphibia, 127, 138 

 Analysis, absence of, in animals, 235 

 Animal behaviour and human morality, 



Animal societies and division of labour, 



344 



Ants (see Hymenoptera} 

 Application of experience, 263 

 Application, spontaneous, 263 

 Aristotle, 7, 335, 339, 368, 374, 385 

 Art, evolution of, 345 

 Articulata, 139 



Articulateness in experience, 147 

 Assimilation and Readjustment, Ch. VII 



,, retrogressive, 126 



,, work of, 132 

 Association of Ideas, 144, 148, 153 

 Association, sense impulse theory of, 



176 



Attention not natural but acquired, 238 

 Autenruth, 71 

 Automatic movements, 40 



Bastian, Dr. H. C., 327 



Bates, H. W., 277 



Bateson, W., 87, 117, 126, 134, 136, 



161 



Bees (see Hymenoplera) 

 Berry, C. S., 242, 243, 306 

 Bethe, Albrecht, 136, 328 

 Binet and Henri, 1 54, 1 55 

 Bingley, Rev. W., 240 



Birds, reflex action among, 53 



,, operation of experience among, 



115, 116, 127 

 ,, modification of instinct among, 



308 



,, sentinels used by, 309 

 ,, grades of, 425 



Birth-rate, 420-428 



Bonnet, C., 82 



Bradley, F. H., 335 



Brehm's Thierleben, 80, 82, 126, 127, 

 135. 137, 138, 139, HO, 240, 274, 

 288, 293, 308, 310, 311, 312, 313, 



314, 3*7 



Buckton, G. B., 84 

 Bur don Sanderson, SirJ., 34 



Calkins, Miss M. W., 157 

 Cambridge Natural History, 69, 86, 



96, I3 6 > !37, HO, 421 

 Cats, Mr. Thorndike's, 176-184 



character of, 189 



pulling string, 190, 191, 192 



using lever, 195 



using pull-bolt, 197, 198 



using push-back bolt, 201 



lifting catch, 203 

 loop, 207 



pulling spike, 209 



lifting cover, 212 



upsetting jug, &c., 210, 211, 212 



opening drawers, 215, 216 



sliding lid, 217 



"control" experiments with, 



221, 222 



,, using tied cord, 228 

 Cells, 27, 39, 40 

 Cephalopods, action of experience 



among, 140 

 Children, reflex action in development 



in, 51 



463 



