MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 383 



Table CXII. — Detailsofdi nt Vo. 81 {part oj metabolism experiments Nos. 15, 16, and 17). 



DETAILS OF DIGESTION EXPERIMENT NO. 82. 



This experiment was preliminary to and formed a part of metabolism experiments Nos. 

 18-21. The subject was A. W. S., a physicist. Ho was engaged in the investigations of which 

 this experiment forms a part. The study began with breakfast February 2. 1899, and continued 4 

 days outside the apparatus. During the following '.» days, beginning with February ti. the subject 

 was inside the resph'ation chamber. It was the intention to subdivide the 13 days covered by this 

 digestion experiment into three separate experiments, comprising the 4 preliminary days previous 

 to the time when the subject entered the respiration calorimeter; the 6 days in the calorimeter 

 in which alcohol formed a part of the diet, either as commercial alcohol, whisky, or brandy; and 

 the 3 days of experiment No. 21 in which alcohol was omitted from the diet. Unfortunately no 

 satisfactory separation of the feces was obtained between the preliminary period and the end of 

 the experiment No. 21. The whole time is therefore included in one digestion experiment. 1 he 

 body weight of the subject at the beginning of the period was 72.4 kilograms, and at the end 72.7 

 kilograms (160.3 pounds). During the preliminary days very little muscular work was done, 

 and during the sojourn in the apparatus practically no exercise was taken. The kinds and daily 

 amounts of foods were the same during the 4 preliminary days, and the 6 days of metabolism 

 experiments Nos. 18-20, except that alcohol was taken in the form of commercial ethyl alcohol in 

 the preliminary period and in No. is, whisky in No. 19, brandy in No. 20. In experiment No. 

 21 the alcohol was omitted from the diet. 



