. BASAL METABOLISM OF NORMAL MEN AND WOMEN. 217 



to one of these physical characters merely. This has been necessary 

 in order to secure a number of individuals in the several compartments 

 of the table. With the grouping of weight and stature adopted in the 

 accompanying table, 28 of the 30 different combinations of stature and 

 weight are represented by from 1 to 9 individuals each. When the 

 theoretical heat-productions are computed from weight and stature, 

 26 of the 28 groups of women classified with regard to both stature 

 and weight show lower average heat-productions than they would if 

 they were composed of men falling in the same range of stature and 

 weight. When weight, stature, and age are all taken into account, 

 24 of the 28 groups of women show lower average heat-productions 

 than they would if they were men of similar weight, stature, and age. 

 The general averages for all the individuals of given stature-groups 

 or weight-groups are by both methods without exception smaller than 

 would be found in men of like physical dimensions. The average defici- 

 ency for the whole series of women is 94.0 calories per 24 hours when 

 stature, weight, and age are taken into account, and 112.3 calories 

 when stature and weight only are considered. The differences for the 

 subgroups naturally vary widely because of the small numbers of indi- 

 viduals. The general average percentage deficiency when weight and 

 stature only are considered in the calculations of the theoretical heat- 

 productions is 7.3 per cent. When age is taken into account as well 

 as stature and body-weight, the deficiency is 6.2 per cent. 



TABLE 83. Differences in the metabolism of men and women. Test based on data of 



Palmer, Means, and Gamble. 



More conclusive proof of the existence of a sexual differentiation 

 with respect to metabolism could hardly be expected. 



As a further test of our method we may compute the daily heat- 

 productions of the 7 young women studied by Palmer, Means, and 

 Gamble 15 from the equation, based on our total men. The results 

 appear in table 83. For every individual the actual heat-production 

 is lower than it would have been in men of the same weight, stature, 

 and age. The differences range from 72 to 373 calories per 24 hours. 



16 Palmer, Means, and Gamble, Journ. Biol. Chem., 1914, 19, p. 239; Means, ibid., 1915, 21, p. 263. 



