98 INDIANA 01 I Hi. PLAIN8 



society has been used by Dr. Kroeber. Thus, it appears 



that while in certain general features, the soldier 

 hand system of police is found among all tribes in 

 the area, there are many other interesting differences 

 distributed to varying extent-. For example, the age 

 grouping is common to hut five tribes, while among the 

 Arapaho it take- ;t special form, the age grouping being 



SM 



Fig. 37. Headdress of Buffalo Skin. Arapaho Women's .society. 



combined with appropriate ceremonial, or dancing 

 functions, including practically all the adult males in 

 the tribes An unusually complete set of the regalia 

 of the Arapaho series is exhibited in the Museum and 

 from the Gros Ventre, a related tribe, is shown the 

 only known specimen of the peculiar shirt worn by a 

 highesl degree dog society member. Other regalia are 

 exhibited for the Blackfoot, ( 'row. and Hidatsa 



