STATISTICS OF OBSERVATIONS. 



101 



Table 23. — Results of observations on the gaseous exchange of infants — Continued. 



[I, Very quiet, probably asleep; II, Slight movements, few in number; III, Some activity, but 

 generally quiet; IV, Moderately active; V, Distinctly active; VI, Very active, most or 

 all of the time.] 



Calculated from the weight of carbon dioxide produced during the period. The preliminary 

 periods for all days are omitted in computing the minimum metabolism. See table 31, p. 142. 



