Exchange and Biological Transformations of Energy. 103 



TABLE 11. 



Volumes of oxygen in incoming air corresponding to 100 volumes of outgoing 

 air with different percentages of nitrogen (79.03 : p. ct. N 2 :: 20.94 : x) ; 

 x = volumes of oxygen in incoming air. 



TABLE 12. 



Factors and their logarithms for converting dry gases at C. and 760 

 millimeters pressure to the observed pressure p (corrected to C. for 

 scale correction) and to saturation at 37 C. (body-temperature). 



Formula = ^ x ^^ X vol. at C. and 760 millimeters pressure. 



NOTE: This table is for obtaining the volume per respiration. To use it, multiply the 

 reduced ventilation per minute by the factor for p (p = observed barometric pressure corrected 

 to C. for scale correction, but not for tension of aqueous vapor) and divide by the respira- 

 tion rate. The result will be volume per respiration in liters. (If body-temperature is 

 taken as 34 C., the factor will be lowered about 1 per cent.) 



