262 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



upon the data, owing to the general irregularity in muscular repose 

 shown by this subject, especially in the sitting position. The experi- 

 ment may be said, therefore, to give incomplete evidence as to the 

 increment in the metabolism due to a predominatingly fat diet. 



TABLE 195. J. J. C., March 12, 1910. Sitting. (1-hour periods.) 

 Butter and. potato chips: 



Amounts, 38 grams butter, 91 grams potato chips; nitrogen, 0.76 gram; total energy, 798 



cals. 

 Fuel value: Total, 791 cals.; from protein, 2 p. ct. ; from fat, 79 p. ct. ; from carbohydrates, 



19 p. ct. 



Nitrogen in urine, 0.30 gram per hour. 1 



Basal values (March 12, 1910): CO 2 , 24 grams; Oz, 20.5 grams; heat, 75 cals.; respiratory quo- 

 tient, 0.86. Nitrogen in urine, 0.14 gram per hour. 



'Sample included amount for about 2 hours preceding eating of food. 



2 Subject finished eating 22 minutes after beginning of this period. The eating occupied 16 

 minutes. 



L. E. E., March 14, 1910. A larger amount of butter was taken in 

 this experiment than in the preceding experiment, 92 grams being eaten 

 with 114 grams of potato chips. The detailed results are given in 

 table 196. Although L. E. E. was a trained observer on the staff of 

 the Nutrition Laboratory and accustomed to remaining very quiet, 

 he was in this experiment distinctly restless. The increment in carbon- 

 dioxide production was found in the first and third periods; the values 

 for oxygen consumption and heat production were also irregular. For 

 some as yet unexplained reason, the metabolism in the second and 

 fourth periods was shown to be basal by all three factors. The total 

 increment for the carbon-dioxide production was 6 grams, for the 

 oxygen consumption 13 grams, and for the heat production 36 calories, 

 thus confirming the evidence of the experiments previously discussed 

 that the ingestion of a predominatingly fat diet has a positive effect 

 upon the metabolism. 



J. R., March 21, 1910. After the ingestion of 95 grams of butter and 

 92 grams of potato chips, slight increments were found in carbon- 

 dioxide production throughout the 5 hours of the experiment and in 

 most of the periods for heat production, with somewhat large incre- 

 ments in oxygen consumption. The results of the experiment, which 

 are given in detail in table 197, thus supply further proof as to the 



