HRULICKA] 



PHYSIOLOGICAL AND MEDICAL OBSERVATIONS 



95 



Duririji; the iirst year the respiration of tlie Apache children is 

 somewhat more frequent than that of the Pima, and in the infants 

 of both tribes it is more rapid in the females than in the males; dur- 

 ing the second year the frequency is nearly the same in the two 

 tribes, and in both it is greater in the male, Init the average age of 

 the females in this group is higher; during the third year the fre- 

 quency of respiration is again greater in the Apache and is also 

 somewhat greater in the Apache males than in the females; during 

 the fourth year the rate of respiration in the two tribes is about 

 equal and in both greater in the males, but once more the average 

 age of the female subjects is somewhat greater, so that the figures 

 are not directly comparable. C-omparison with whites is difficult 

 on account of a lack of good data obtained under similar regulations. 

 If the old Quetelet figures and some of those collected by Vierordt 

 be taken as representative, then respiration is more frequent than 

 in the whites until at least the*^.nd of the fourth year among the 

 Apache males and the end of the third year among the Apache 

 females, and during at least the second year among both sexes of the 

 Pima. After the fourth year the rate diminishes, probably fall- 

 ing in both tribes and in both sexes (see data of the second series 

 of children) slightly below the average in whites, and thereafter 

 remains for a long period nearly stationary. The relatively higher 

 rate during the earlier infancy of the Indian children corresponds 

 to some extent with their more frequent pulse rate at that period. 

 It is to be regretted that the groups are- not larger and the results of 

 the investigations more conclusive. 



The ratio of pulse to respiration was found to vary within com- 

 paratively wide limits among the smaller infants, even though there 

 was no excitation or sickness. There was no chance to study prop- 

 erly the variation in single individuals. The following figures show 

 the ratio at different ages of the Indian infants. Precise and ample 

 data for white children for comparison are wanting, but from the 

 observations made it ap|)ears that a large majority of cases among 

 the whites are within the range of 2.5 to 4.5 pulse beats to 1 respiration, 



I'lihe-rcspiralioii nitio, acrordijK/ (o age 

 .VFACUK 



