BASAL METABOLISM. 



61 



in the preceding series with H. R. D., the individual values being 2,109 

 and 2,305 calories for the heat production, with an average of 2,207 

 calories. The food was taken at the usual meal times and the quanti- 

 ties were so adjusted that a large amount could be eaten by the subject. 

 The metabolism was considerably increased by the food, the incre- 

 ment in the carbon-dioxide production being 180 grams, in the oxygen 



TABLE 11. //. R. D., December 5-S, 1905. (24-hour periods, 7 a. m. to 7 a. m.) 



Mixed diet: 1 



Amount, 2,010 grams; nitrogen, 12.66 grams; total energy, 2,197 calories. 

 Fuel value: Total, 2,086 calories; from protein, 16 per cent ; from fat, 35 per cent ; 

 from carbohydrates, 49 per cent. 



'The food was eaten mostly in three portions, at 9 a. m., 2 p. m., and 6 p. m. 



TABLE 12. N. M. P., December 9-12, 1905. (24-hour periods, 7 a. m. to 7 a. m.) 



Mixed diet: 1 



Amount, 3,098 grams; nitrogen, 23.54 grams; total energy, 4,690 calories. 

 Fuel value: Total, 4,486 calories; from protein, 14 per cent; from fat, 30 per cent; 

 from carbohydrates, 56 per cent. 



x The food was eaten in four portions, at 8 a. m., 1 p. m., 6 p. m., and lONJO 01 p. m 



consumption 104 grams, and in the heat production 379 calories. That 

 this increase was coincidental with the ingestion of a large amount 

 of nitrogen and with a considerable part of the fuel value coming from 

 carbohydrate is not surprising. The fuel value of the total diet was 

 practically twice the daily requirements in the fasting period. The 

 noticeable increase in the nitrogen excretion on the day with food is 

 explained by the high nitrogen content of the diet. 



