SOCIAL TRANSITIONS 247 



employing the same fundamental idea under the 

 thin disguise of "social appetite," (122) "social drive," 

 or "group interattraction," (100) which is apparently 

 understood as inherited. These contributions to a 

 more picturesque language do not necessarily ad- 

 vance our understanding of social behavior. 



Still others sincerely believe that fiehavior patterns 

 are not inherited, which seems to me a clearly un- 

 tenable position. But however strong my belief in 

 the actual inheritance of social behavior I do not 

 consider it helpful to make the possession of such an 

 inheritance the major criterion of social living; it 

 is not a practical working test as to what constitutes 

 social life. 



If division of labor be used as a touchstone the 

 same type of difficulty arises. We do not know how 

 to determine when such a division becomes suffi- 

 ciently general to merit being called a social attribute 

 in the stricter sense in which we are now using the 

 term. For example, there is a division of labor which 

 is associated with sex and which is almost as exten- 

 sive as sex itself. When does this particular division 

 of labor cease to be merely an expression of sex and 

 become social in the commonly accepted use of the 

 word? 



The mention of sex brings up again another im- 

 portant definition of social life among animals which 



