HEDLICKA] 



PHYSIOLOGICAL AND MEDICAL OBSERVATIONS 



103 



The differences in the pulse rate as compared with the whites are 

 seen to be pronounced and quite similar in the two tribes. In the 

 males the scale of differences is practically the same ; m the Apache 

 females the differences in most of the groups are found to be slightly 

 less, this condition being due to the presence of a somewhat 

 larger proportion of cases with relatively rapid pulses, among the 

 children of this tribe. 



The differences in pulse rate between the Apache and the Pima are 

 quite insignificant. In the males of the two tribes the rate is nearly 

 the same ; in the females the Apache show in most of the groups a 

 slightly liigher rate than the Pima. The reason for this was not 

 detected. 



The differences between the sexes in pulse rate are pronounced and 

 persistent in both tribes. Taking only the larger groups into con- 

 sideration, these differences may be expressed in figures as follows: 



Excess of average pulse rate in females over that in males 



a Beats. 



The condition of a relatively high pulse in most of the groups of 

 the Apache female children is here met with again. The cause is 

 unknown to the wTiter, for equal care was taken in the case of both 

 tribes as to the exclusion of records of children not in full health, and 

 there were no differences of moment in the circumstances of the 

 examinations. In the adult women of the tribes the pulse rate is 

 about equal. 



Respira. on m relation to stature: No records on respiration in 

 whites have been fomid that correspond directly to the classification 

 by stature of the Indian children. From data obtained indirectly, as 

 given in the table below, it appears that between the ages of about 3 

 and 5 years there is little if any difference in the rate of respiration of 

 children of the two races. From about 6i to 20 years of age the condi- 

 tions differ with respect to the two tribes represented; in the Pima 

 children of all groups and of both sexes the average rate of respiration 

 is about the same as among wliites, but in the Apache it is slightly 

 lower m all groups and in both sexes. (See pi. xiv.) The adult 

 rate in whites is nearly equal to that among the Indians of the two 

 tribes here dealt with. 



