"Comparative Psychology is an as yet almost unexplored 

 territory and but little understood, for want of approaching 

 it by the best side, that is to say, by carefully made obser- 

 vations. It is involved either in metaphysical dogmas, 

 * * * or in shallow anthropomorphism which confounds in- 

 herited instinct and its automatisms with the plastic judg- 

 ment of the individual, based upon memory and the asso^ 

 elation of memories or sensory impressions. * * * Let us 

 be thoroughly imbued with the truth that each species and 

 even each polymorphic animal form has its special psy- 

 chology, which should be especially studied, and which de- 

 pends on the one hand, upon the development of its muscles 

 and senses, and on the other, upon that of its brain." 



FOREL, "The Senses of Insects." 



