Belations between Factors of Metabolism. 



229 



kilogrammeter of work on the ergometer to be, with a fat diet, 1.996 c. c; with 

 a carbohydrate diet, 2.172 c. c. : and with a protein diet, 2.377 c. c., or 0.00285, 

 0.00310, and 0.00339 grams, respectively. The corresponding respiratory quo- 

 tients obtained at the time of these experiments were 0.722, 0.901, and 0.796. 

 In our experiments with a professional bicycler, the respiratory quotients were 

 in the 4 experiments in which oxygen was determined as follows : January 23, 

 0.90; January 21, 0.80; January 25, 0.80; and January 20, 0.90. It is seen, 

 therefore, that the amount of oxygen per kilogrammeter in these experiments 

 where the respiratory quotient was 0.85 is almost identical with that found by 

 Heinemann in his experiments, with a respiratory quotient of 0.790. 



Table 95. Oxygen consumed per kilogrammeter of work in experiments with N. B. 



[Amounts per hour.] 



Heat produced per kilogrammeter of work. In the experiments made with 

 a bicycle-ergometer and a respiration calorimeter at Wesleyan University, it 

 was possible to compute directly the kilogrammeters of work and the energy 

 required per kilogrammeter of work thus performed. These values have been 

 computed on a somewhat different basis in the publication of the original data, 

 and table 96 shows the heat produced during work above that during rest, ex- 

 pressed in quantities per hour; the heat equivalent of external muscular work 



Table 96. Heat produced per kilogrammeter of work in experiments with A T . B. 



[Amounts per hour.] 



