250 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



Table 7. — Summary of results of metabolism erpt rimi nts Nos. 82, 84, and 83 — Continued. 



GROUP G. EXPERIMENTS NOS. 13, 14, AND 7. REST EXPERIMENTS WITH ORDINARY AND WITH 



ALCOHOL DIET. 



While the 3 experiments in this group are all rest experiments and all with the same subject, 

 E. O., the ordinary experiments and the alcohol experiments were not planned to be exact dupli- 

 cates of each other, and are therefore less exactly comparable than those in preceding groups. 

 For the sake of comparison with the alcohol experiment. No. 7, however, 2 ordinary experi- 

 ments, Nos. 13 and 14, were chosen in which the average of the amounts of protein and energy in 

 the daily diet in the 2 experiments was practically the same as in the alcohol experiment. Since 

 these experiments were made with the same subject and under conditions somewhat similar, the 

 results may be compared in studying the effect of alcohol on metabolism. 



Experiment No. 13 was intended to be as nearly as possible a duplicate of experiment No. 9. 

 The ordinary diet in experiment No. 13 furnished 117 grams of protein and 2,596 calories of 

 energy per day, which was 2 grams of protein and 121 calories of energy less than in No. 9. 

 The preliminary period of No. 13 began with breakfast November 8, L898, and continued 4 days. 

 during which the subject had as little muscular exercise as practicable outside of his regular 

 occupation as laboratory assistant. He entered the chamber on the evening of November 7, and 

 the experiment proper began at 7 a. m. November 8. It was intended that the experiment 

 should continue 4 days, but on the fourth day a leak occurred in the ventilating air pipe at such 

 a point that the results for that day were destroyed; consequently the experiment is recorded as 

 a 3-day experiment. While this was a rest experiment in general character, the subject was not 

 so quiet throughout the experimental period as he had been in earlier and was in later similar 

 experiments. 



Experiment No. 14 was carried out under much the same conditions as No. 13, with the 

 exception that in No. 14 the amount of protein in the diet was reduced from 117 to 94 grams per 

 day, and the energy from 2,596 to 2,513 calories per day. The preliminary digestion experiment 

 began with breakfast December 17. 1898, and continued 3 days. The subject entered the appa- 

 ratus on the evening of December 19. and the experiment proper began at 7. a. m. December 20 

 and continued 4 days. 



The average of the amounts of protein and energy in the daily diet of the 2 ordinary experi- 

 ments. 13 and 14, was 105 grams of protein and 2.555 calories of energy. 



The alcohol diet in experiment No. 7 furnished 104 grams of protein and 2.462 calories of 

 energy per day. The diet in this experiment included so grama of commercial alcohol, with 90.6 

 per cent, or 72.5 grains, of pure ethyl alcohol, which furnished 512 calories of energy per day. 

 The preliminary digestion experiment began with breakfast June 4. 1897, and continued 4 days. 

 The subject entered the chamber on the evening of June 7, and the experiment proper began at 

 7 p. m. June 8 and continued 4 days. 



