320 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



eggs, a total of 1,564 grams. The fuel value of this diet was 3,442 

 calories, of which 13 per cent came from protein, 63 per cent from fat, 

 and 24 per cent from carbohydrates. The measurements were made 

 in one period of 10? hours and one period of 10 hours. (See table 245.) 

 The average basal value used for the first food period was drawn from 

 measurements made on three different days with reasonably concord- 

 ant values. Although the periods of measurement differed slightly 

 from those of the food experiment, the basal values have been computed 

 to a comparable basis. 



TABLE 245. H. R. D., April 10-11, 1906. 



Heavy Cupper (mixed diet): 



Amount, 1,564 grams; nitrogen, 17.81 grams; total energy, 3,599 cals. 



Fuel value: Total, 3,442 cals. ; from protein, 13 p. ct.; from fat, 63 p. ct. ; from carbohydrates, 

 24 p. ct. 



Subject retired at 9 h 16 m p. m. on night of April 20-21, at 9 h 42 m p. m. on May 9-10, at 

 p. m. on May 17-18, and at 10 h 26 m p. m. on April 10-11. Previous to these times there was the 

 activity connected with weighing and the preparation for retiring; on the night of April 10-11 

 subject went to the food aperture twice and opened it 20 times. 



2 Computed to basis of 101 hours, i. e., to duration of corresponding period with food. 



3 Heat values on nights of April 20-21 and May 17-18 not corrected for small change in body- 

 weight or for change in body-temperature. 



'Computed to basis of 10 hours. 



5 Subject finished eating about an hour after the beginning of this period. 



Period, 7 h 15 m a. m. to 8 b 15 m a. m., when subject rose, weighed, etc., is omitted because satis- 

 factory base-line was not obtained. 



As in the previous experiment, the activity in the first food period 

 was somewhat greater than that in the fasting periods with which it 

 was compared, for the subject retired earlier in the fasting experiments 

 and the activity due to receiving and eating food was absent. He 

 went to bed on April 20 at 9 h 16 m p. m., on May 9 at 9 h 42 m p. m., and 

 on May 17 at 9 h 30 m p. m. On April 10-11 (the food period) he ate 

 supper between 9 h 20 m p. m. and 10 h 08 m p. m., finishing about an hour 

 after the beginning of the experiment. During this time he went to 

 the food aperture twice and opened and shut it 20 times. He retired 

 at 10 h 26 m p. m. As no suitable basal value could be obtained for com- 



