148 



GASEOUS METABOLISM OF INFANTS. 



clearly as possible the variations between the weights of the infants 

 included in this study and the accepted normal weights of infants of 

 similar ages, we give in table 32, first, the age; second, the weights of 

 our infants at the time of observation; and third, the average weight 

 for infants of the ages indicated, these averages being compiled from 



Table 32. — Normal and expected body-weight of infants included in these observations. 



Calculated by adding to or subtracting from the normal weight for age the excess or 

 deficiency in weight at birth, assuming normal birth-weight as 3.40 kilograms and that 

 increase in weight after birth is the same as for normal development. 



Holt's table for healthy, American, breast-fed infants. Even with 

 normal infants there are great differences in the birth- weight; we have 

 accordingly computed for this table the weight that would be expected 

 for each of our subjects with a normal rate of growth, taking into 

 consideration variations in birth-weight and using the curve for 



