236 A BIOMETRIC STUDY OF BASAL METABOLISM IN MAN. 



12 women who have a metabolism above this standard is 14.0 per cent. 

 For the whole series, regarding signs, the average excess is 8.2 per cent. 

 Now data are not as yet available for determining the real signifi- 

 cance of these actually demonstrated differences. They may be due 

 to defective technique, although we believe that other students of 

 human metabolism will agree with us in holding the manipulative 

 features of Magnus-Levy's work in the highest regard. They may 

 represent real physiological differentiation, possibly due to differences 

 in plane of nutrition 12 or in muscular training (to be discussed under 



TABLE 92. Comparison of metabolism of German girls and women studied by Magnus-Levy 

 and Folk with the American masculine normal (multiple prediction) standard. 



Illustration D, below) in the women of the German and the men of the 

 American classes from which the subjects were drawn. The solution 

 of this question must be a problem for the future. The results show 

 with the greatest clearness the value of standard tables based upon 

 three characters for the direction of future research. 



Again the results exemplify the importance of large groups as a 

 basis for conclusions. Five of the 17 women show heat-productions 

 less than the male standard. Had a smaller number been examined, 

 one or more of these might have been included and the result have been 

 far less conclusive than it seems with 17 determinations. 



12 See Chapter VI, p. 196. 



