56 THE BRAIN OF THE TIGER SALAMANDER 



CONCLUSION 



The preceding outline of a regional analysis is framed in very gen- 

 eral terms. The evidence upon which it is based is assembled in Part 

 II of this work and references there given. This evidence, though far 

 from complete, is regarded as adequate for the anatomical arrange- 

 ments described. The physiological inferences drawn from these ar- 

 rangements and the general theory expressed in the following chap- 

 ters rest on a less secure basis. The correctness of these conclusions 

 can be tested experimentally, and the hope that this will be done has 

 motivated the labor expended upon this program of histological 

 study. 



