HRDUCK.\] 



PHYSIOLOGICAL AND MEDICAL OBSEEVATIONS 



105 



Sex differences in the rate of respiration exist in both tribes. 

 They are not great, ranging only up to 1,3 respiration per niinute 

 among the Apaclie and 1.4 per minute among the Pima, in favor of 

 the females, but they are seen to exist among a large majority of the 

 groups. 



Pulse-respiration ratio, by stature: The average relations of the 

 pulse and the respiratory rates, as may be seen from the following 

 table, do not change materially in the Indian child with increase in 

 stature after the age of 5 or 6 years; and throughout life they are 

 probably below the averages which commonly prevail among the 

 whites, in whom the ratio is usually from 4 to 4^ pulse beats to each 

 respiration. 



Pulse-respiration ratios, in relation to stature 

 SAN CARLOS APACHE 



PIMA 



The relations differ by tribe and by sex principally in conformity 

 with the differences in the rate of respiration. The number of heart 

 beats to every respiration is perceptibly liigher among the Apache of 

 both sexes (though slightly more among the males), and in all the 

 stature groups, than among the Pima. Considering sex alone, the 

 ratio is somewhat liigher among the Apache, and very slightly higher 



