POLITICAL HEADS CHIEFS, KINGS, ETC. 365 



Headship of the conquering chief has been a normal accom 

 paniment of that political integration without which any high 

 degree of social evolution would probably have been impos 

 sible. Only by imperative need for combination in war were 

 primitive men led into cooperation. Only by subjection to 

 imperative command was such cooperation made efficient. 

 And only by the cooperation thus initiated were made pos 

 sible those other forms of cooperation characterizing civilized 

 life, 



