PHYSICAL AND PHYSIOLOGICAL MEASUREMENTS. 



sr, 



the increase varies from 1.46 to 2.73 c.c. for each kilogram of weight. 

 The increase in the volume of CO 2 with increase in body-weight is in 

 every instance less than the increase in the volume of 2 with body- 

 weight. Thus, in the women C0 2 production increases 0.62 c.c. per 

 kilogram of weight in the supplementary series and 1.30 c.c. per kilo- 

 gram of weight in the original series. In the larger series of men the 

 increase in C0 2 output per kilogram of body weight ranges from 1.05 

 to 2.11 c.c. For the total series oxygen consumption increases about 

 1.17 c.c. in w r omen and 2.27 c.c. in men for each kilogram of body- 

 weight. Carbon-dioxide excretion increases about 1.02 c.c. in the 



360 



340 



320 



300 



230 



-260 



240 



-ZZO 



200 



ISO 



ISO 



35 *0 45 



50 



55 SO 65 70 7S 80 85 30 9S iOO lOS 



BODY WEIGHT 



DIAGRAM 9. Relationship between body-weight and oxygen consumption by men. 



women and 1.89 c.c. in the men. This result would be expected from 

 the fact that the respiratory quotient is practically always less than 

 unity. 



The significance of the differences in the exchange of the two gases 

 will be discussed below. The difference between the two sexes will be 

 treated on the basis of total heat-production in Chapter VII. 



6. STATURE AND GASEOUS EXCHANGE. 



The correlations between stature and gaseous exchange appear in 

 table 26. The coefficients for the relationship between stature and 

 both oxygen consumption and carbon-dioxide production in men are 

 of medium or moderately high value and, considering the relatively 

 few individuals (in the statistical, not the physiological, sense), are 

 remarkably consistent throughout. 



