HrplickaJ 



PHYSTOLOGTCAL AND MEDICAL OBSKRVATIONS 



201 



among children and adolescents, showing that in quite a number of 

 instances the condition starts before the period of growth is completed. 

 The extent of the disease in different tribes is indicated below\ The 

 detailed data make it plain that goiter does not depend on any con- 

 dition inherent in the tribes, but is due to purely local agencies, the 

 nature of wliich is not yet well known. 



Goiter am,ong Indians — proportion pe^ thousand of population 



Cretinism, notwithstanding the prevalence of goiter, is a very rare 

 condition. The reported cases were : " 



1 Indian (female adult), at the Fort Belknap agency, Mont., in population of 1,234. 

 1 Navaho (female child), at the Navaho agency, N. Mex., in population of 12,000. 

 1 Winnebago (male adult), at the Omaha and Winnebago agency, Nebr. . in popula- 

 tion of 1,085. 



In all these localities goiter is very rare. In many tribes in 

 which goiter is relatively common cretinism is entirely absent. 



Insanity: The reports on insane Indians «how more or less rare 

 instances of this condition in all parts of the country. They em- 

 brace the following : 



1 Apache (male adult), at the San Carlos agency, Ariz., in population of 2,55.3. 

 1 Apache (female adult), at the Fort Apache agency, Ariz., in population of 2,058. 

 1 Apache (male adult), at the Jicarilla agency, Colo., in population of 782. 

 1 Apache (male adult), at Fort Sill, Okla., in population of 298. 



3 Blackfeet or Sioux (1 male young, 1 male and 1 female adult), at the Cheyenne 

 River agency, S. Dak., in population of 2,477. 



1 Indian (male adult), at the Colville agency, Wash., in population of 457. 



10 Crows (7 male and 3 female adults), at the Crow agency, Mont., in population of 1,826. 



2 Iroquois Oneida (female adults), at the Oneida agency, W^is., in population of 2,055. 



a\ few cases are said to exist also among the Chippewa in northeascern Wisconsin. 



