318 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



TABLE 243. H. R. D., February 21, 1906. Sitting. (2-hour periods.) 

 Heavy breakfast (mixed diet): 



Amount, 1,779 grams; nitrogen, 17.09 grams; total energy, 3,845 cals. 



Fuel value: Total, 3,697 cals. ; from protein, 12 p. ct. ; from fat, 54 p. ct. ; from carbohydrates, 



34 p. ct. 



Nitrogen in urine, 1.22 grams per 2 hours. 

 Basal values (February 6 and 10, 1906) : CO2, 47 grams; Oj, 42 grams; heat, 143 cals. 



J Subject ate food in about 45 minutes. 



HEAVY SUPPER. 



Two experiments were made with the Middletown calorimeter in 

 which excessive amounts of food were taken as a supper. Otherwise 

 the experiments were similar in plan to the heavy-breakfast experi- 

 ments, except that the measurements continued for a somewhat longer 

 time and were not made in 2-hour periods. Both of the subjects had 

 been used in the heavy-breakfast experiments. 



A. L. L., April 6-7, 1906. The food taken consisted of 145 grams 

 bread, 42 grams butter, 109 grams eggs, 57 grams potato chips, 256 

 grams bananas, 90 grams sweet chocolate, 446 grams milk, 103 grams 

 cream, and 25 grams sugar, a total of 1,273 grams. The fuel value of 

 the food was 2,364 calories, of which 10 per cent came from protein, 

 53 per cent from fat, and 37 per cent from carbohydrates. 



The food experiment continued from 9 h 15 m p. m., April 6, tol h !5 m 

 p. m., April 7, in all, a period of 16 hours. The experiment was divided 

 into three periods. In the first period of 9 hours from 9 h 15 m p. m., 

 April 6, to 6 h 15 m a. m., April 7, the subject lay quiet and asleep for the 

 greater part of the time. In the first hour and a half there was con- 

 siderable activity, as he weighed himself, received and ate the food, 

 returned the dishes used to the food aperture, and prepared for bed. 

 During this period of activity he went to the food aperture 3 times 

 and opened it about 15 times, and wiped up some spilled cream. He 

 ate his supper between 9 h 40 m p. m. and 10 h 34 m p. m. and retired at 

 10 h 50 m p. m. In the second period of one hour between 6 h 15 m a. m. 

 and 7 h 15 m a. m., April 7, the subject rose, weighed himself, and dressed, 

 then sat quiet (reading) for the remainder of the time. The third period 



