BASAL KATABOLISM. 



105 



INFLUENCE OF AGE ON THE HEAT-PRODUCTION FROM THE SECOND TO THE SEVENTH DAY. 



With a number of infants experiments were made practically every 

 day during the first week of life. While it was not possible to obtain 

 values showing the minimum metabolism for all of these infants on 

 the succeeding days of the week, we have been able to collect data for 

 a considerable number of the infants for the first 8 days of life which 

 show an approximately minimum metabolism. As for the first 5 days 

 of the week the data were obtained from 35 to 56 subjects, and even on 







o 



c 

 v 



z 



25 



"460 480 500 520 540 560 580 600 620 640 660 680 700 720 740 



Calories per Sq Meter per 24 Hours 



FIG. 9. Minimum heat-production of new-born infants per square meter of body-surface 



per 24 hours referred to age. 



the last 3 days from 6 to 16 subjects, we may fairly say that they are 

 distinctly comparable. While these values do not represent the actual 

 minimum metabolism, they probably do show, in general, the basal 

 metabolism; they are therefore compared in table 13, in which are 

 given: first, the number of subjects averaged for each day, and second, 

 the average heat-production per square meter of body-surface per 24 

 hours for the successive days. 



