316 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



calories for an 8-hour period, this increment of 186 calories shows a long 

 and sustained increase, amounting to nearly 33 per cent of the basal 

 metabolism. During the first two periods the increment was 55 calories 

 above a basal value of 142 calories, or nearly 40 per cent increase. 



A. H. M., February 19, 1906. The diet in this experiment consisted 

 of 204 grams bananas, 63 grams potato chips, 29 grams potted chicken, 

 139 grams whole wheat breakfast food (dry), 103 grams graham bread, 

 284 grams oatmeal, 520 grams cream, 141 grams eggs, 150 grams peanut 

 butter, a total of 1,633 grams. The fuel value of the food was 3,936 

 calories, of which 13 per cent came from protein, 54 per cent from fat, 

 and 33 per cent from carbohydrates. As a result of the ingestion of 

 this food, there was a large increase in the three factors of metabolism 

 which continued throughout the experiment. (See table 241.) In 

 the first two periods the increments in the heat production of 64 and 

 65 calories, respectively, correspond to an increase above basal of 

 approximately 45 per cent. Even in the last period the increment in 

 the heat was 41 calories. It can easily be seen from these results that 

 a meal of this type taken in the morning would have an effect upon the 

 metabolism for practically the entire working day. 



TABLE 241. A. H. M., February 19, 1906. Sitting. (2-hour periods.) 



Heavy breakfast (mixed diet): 



Amount, 1,633 grams; nitrogen, 20.11 grams; total energy, 4,112 cals. 



Fuel value: Total, 3,936 cals.; from protein, 13 p. ct.; from fat, 54 p. ct. ; from carbohydrates, 

 33 p. ct. 



Nitrogen in urine, 1.72 grams per 2 hours. 

 Basal values (February 12 and 14, 1906): CO2, 45 grams; Oz, 40 grams; heat, 142 cala. 



Subject ate food in 41 minutes. 



H. R. >., February 17, 1906. For breakfast this subject ate 77 grams 

 dry cereal, 134 grams sugar, 381 grams cream, 123 grams apples, 658 

 grams milk, 205 grams baked beans, 31 grams bread, 29 grams peanut 

 butter, 41 grams graham crackers, 146 grams eggs, and 3 grams potato 

 chips, a total of 1,828 grams. This diet had a fuel value of 3,311 

 calories, of which 12 per cent came from protein, 43 per cent from fat, 

 and 45 per cent from carbohydrates. The details of the experiment 



