Index 



297 



SMALL, W. S., 173. 



SMITH, S., 269 f., 280. 



Social consciousness of animals, 146 f. 



SPALDING, D. A., 162, 163, 165. 



STOUT, G. F., 3. 



Swimming, by chicks, 161 f. 



Time of achievement as a measure of 

 the closeness of association, 28, 40, 42, 

 54. 



Time-curves, 38 ff., 57 ff., 65, 185 f.; as 

 evidence against the existence of 

 reasoning, 73 f. 



TlTCHENER, E. B., 2. 



Vigor, as a factor in learning, 46. 

 WHITMAN, C. 0., 275 ff. 

 YERKES, R. M., 240. 



