312 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



food resulted in a positive increase in metabolism, as shown by the 

 total increment in the heat production of 189 calories, or approximately 

 a 10 per cent increase. 



N. M. P., December 11-12, 1905. The food intake in this experiment 

 (see table 12, page 61) was much larger than in that with H. R. D., 

 the diet consisting of 260 grams orange juice, 97 grams dry cereal, 

 914 grams milk, 233 grams bread, 13 grams butter, 634 grams cocoa, 

 179 grams eggs, 362 grams beans, 184 grams bananas, and 222 grams 

 crackers, a total amount of 3,098 grams, with a fuel value of 4,486 

 calories. Of this energy, 14 per cent came from protein, 30 per cent 

 from fat, and 56 per cent from carbohydrates. As in the preceding 

 experiment, the food was taken in three portions at the usual meal 

 times. The increase in heat production as a result of taking this food 

 was 379 calories, or approximately 17 per cent. The nitrogen excre- 

 tion also increased considerably. 



H. L. H., June 14, 1910. The experiment with this subject differed 

 considerably from the four previous experiments discussed in that it 

 was but 5 hours long and the measurements were made with the bed 

 calorimeter in Boston in 1-hour periods. The food, which was largely 

 carbohydrates, was taken in one meal (supper) approximately 1 hours 

 before the beginning of the measurements. It consisted of 226 grams 

 rolls, 97 grams sugar cookies, 44 grams sugar, 296 grams strawberries, 

 and 468 grams milk. The fuel value of this diet was 1,731 calories, of 

 which 68 per cent came from carbohydrates, 21 per cent from fat, and 

 11 per cent from protein. The basal value used for comparison was 

 determined on the following day in a series of quiet periods, which were 

 alternated with restless periods to avoid the necessity of enforcing 



TABLE 236. H. L. H., June 14, 1910. Lying. (1-hour periods.) 



Supper (mixed diet): 



Amount, 1,131 grams; nitrogen, 7.31 grams; total energy, 1,794 cals. 



Fuel value: Total, 1,731 cals.; from protein, lip. ct. ; from fat, 21 p. ct. ; from carbohydrates, 

 68 p. ct. 



Nitrogen in urine, 0.34 gram per hour. 

 Basal values (June 15, 1910) : CC>2, 25 grams; C>2, 22 grams; heat, 68 cals. 



