The Reactions of Planarians to Light 



III 



specific behavior would include more phases of action than indi- 

 vidual behavior. 



In the present series of records hardly enough representatives 

 of different genera and different species were under consideration 

 to establish any convincing generalization on this point. 



TABLE xxw 



Comparisons in behavior, generic and specific 



B Individual Behavior 



The analysis of specific behavior leads to the study of individ- 

 uals, since it is the average activity of different individuals that 

 makes up the behavior typical of the species. In biological litera- 



