MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



249 



GROUP P. EXPERIMENTS NOS. 32, 34, AND 33. work EXPERIMENTS WITH ORDINARY AND WITH 



ULCOHOL DIET. 



The series of experiments forming this group was made in April. 1900. The plan of the 

 experiments in this series was as nearly as possible a duplicate of that of the experiments forming 

 Group E, the chief difference being that in the series in Group E the basal ration was supple- 

 mented in the first experiment by sugar, in the second by alcohol, and in the third by butter, 

 whereas in the series in Group F the butter was used in the first experiment, alcohol in the 

 second, and sugar in the third. Both series were work experiments in which the same subject, 

 J. F. S., spent 8 hours each day working on the bicycle ergometer. In each series the subject 

 remained !' successive days within the calorimeter, and the whole investigation was divided into 

 3 experiments of 3 days each, the different experiments being distinguished from each other by 

 changes in the supplemental ration. The basal ration in this series furnished 100 grams of pro- 

 tein and about ^.'.'77 calories of energy per day. The amount of energy in the basal ration 

 varied slightly in the successive experiments of the series, because of slight differences in the 

 composition of the milk. 



The preliminary digestion experiment began with breakfast April 16 and continued 4 days. 

 The diet consisted of the basal ration supplemented with fat in the form of butter, as in experi- 

 ment No. 32. 



The subject entered the respiration chamber on the evening of April 19 and experiment No. 

 32 began at 7 a. m. April 20 and continued 3 days. The diet consisted of the basal ration sup- 

 plemented by 63.5 grams of butter, furnishing 1 gram of protein and 510 calories of energy. 

 The butter was consumed at meals with the rest of the diet. The total diet in this experiment 

 supplied 101 grams of protein and 3,4*7 calories of energy per day. 



Experiment No. 33 began at 7 a. m. April 23 and continued 3 days. The diet in this experi- 

 ment consisted of the basal ration, supplemented by 79.5 grams of commercial alcohol with 90.6 

 per cent, or 72 grams, of absolute alcohol, furnishing 509 calories of energy. The commercial 

 alcohol was added each day to 795.5 grams of water sweetened with 2."> grams of sugar, making 

 900 grams of a mixture which was divided into six portions (see p. 292). the larger of which 

 were taken at meals and the smaller between meals and before retiring. The total diet in this 

 experiment furnished 100 grams of protein and 3,486 calories of energy per day. 



Experiment No. 34 began at 7 a. m. April 26 and continued 3 days. The diet consisted of 

 the basal ration supplemented by 128 grams of cane sugar, furnishing 507 calories of energy. 

 The daily amount of sugar was supplied to the subject each morning in the form of rock candy. 

 which he ate at intervals during the day according to his taste. The total diet in this experiment 

 furnished 100 grams of protein and 3.493 calories of energy per day. 



The following table summarizes the results of these 3 experiments. Detailed data of experi- 

 ment No. 33 will be found in the Appendix, pages 366 to 37s. and those of experiments Nos. 32 

 and 34 in Bulletin 109 of the Office of Experiment Stations: 



Table 7. — Summary of results of metabolism experiments Nos. .:.', •-;;. ami 33. 

 [Quantities per day.] 



