FUNCTION OF VIBRISSAE IN BEHAVIOR OF WHITE RAT 81 



associations which belonged to each — pain, closed door, no 

 food, with the one, and open door, food, pleasure with the other. 



The practical use of the discrimination led to its formation 

 and helped to perfect it. 



As it grew in power it could be further separated in time and 

 space from the place and moment of necessity. It also became 

 more definite and accurate and showed active signs of the com- 

 parison which was at first probably only implicit in the act. 



It can only be said in conclusion that the problem was solved 

 by a series of discriminations and associations which varied 

 with individuals and which had a regular course of develop- 

 ment; that the process showed in certain stages what seemed 

 like comparison and at the plate what seemed like revival and 

 that this leads us to infer some form of stable psychological 

 content, independent of fixed time and space conditions per- 

 haps weakly analogous to human imagery. * 



* See Katzaroff's work on recognition for a description of the feeling of familiarity. 

 He finds, in recognition, the two stages in human consciousness which this paper has 

 attempted to describe in animal behavior. Katzaroff, D. : La Recognition, Archives 

 de Psychologie, 1911, t.ll, no. 41. 



