CLASSIFICATION OF ANIMAL AGGREGATIONS 37 



the societies of man and those of the other vertebrates which ap- 

 proach these standard societies in their social organization. 



The difficulties inherent in the further elaboration of this scheme 

 reveal at once the lack of natural divisions between the different 

 levels of organization with which we are dealing. It is apparent that 

 we must recognize that the whole field of interrelationships of organ- 

 isms must be taken as the content of general sociology; we can only 

 arbitrarily single out some particular level of social appetite, group 

 reaction, community integration, social value, or exhibition of divi- 

 sion of labor, as forming the beginning of social life. 



