152 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



with food materials having a high energy value and consequently a 

 great effect on the metabolism, the curve for the beefsteak experiment 

 with Dr. S. on June 30, 191 1, 1 is given in figure 2. In this experiment 

 177 grams of beefsteak were taken by the subject. The last experi- 

 mental period was completed 6 hours 35 minutes after he had finished 

 eating. The points in the curve were plotted and area of increment 

 defined as for the curve in figure 1. The total area, as measured by the 

 planimeter, was 9.32 units, corresponding to 56 calories. The fuel value 

 of the beefsteak ingested was 298 calories; the increment (56 -7-298) was 

 therefore 19 per cent of the fuel value. (See table 215, page 284.) 

 Statistical data not included in the tables or in the discussion are 

 given in the following paragraphs for all of the experiments. When- 

 ever the basal values were determined immediately before the coffee- 

 drinking, the times given include both basal and coffee periods. 



I 15 



I.IO 



1.05 



1.00 



n 

 O 



.90 



Basal value 



Yt 3 3>i 4 

 Hours after food 



FIG. 2. Curve showing increment of heat production following ingestion of 177 

 grams of beefsteak in experiment with Dr. S., June 30, 1911. 



CALORIMETER EXPERIMENTS. 



A. W. W., 8*21 a. m. to 4 h 21 m p. m., April 12, 1907. 58.0 kilograms.- 

 No apparent diuretic or bad effects from drinking coffee. Urinated at 

 7 h 10 m a. m. (after enema) and once in every period except first; drank water 

 at beginning of both third and fourth periods (303.5 grams in all). Less quiet 

 in fourth period than in others. Body-temperature, 36.58, 36.89, 36.93, 

 37.03, and 37.05 C. Pulse rate, 62; respiration rate, 21. 



A. H. M., 8 h 09 m a. m. to 4 h 09 m p. m., April 19, 1907. 66 kilograms.- 

 Coffee made in a percolator in proportion of one tablespoonful coffee to one 

 cupful water; strong infusion obtained after boiling for some time. Subject 

 directed to drink during the experiment a cupful of coffee each hour until he 

 could take no more; was not a coffee drinker. Cupful of coffee with two tea- 

 spoonfuls of sugar taken at 8 h 18 m , 9 h 18 m , 10 h 20 m , and Il h 18 m a. m., and 5.2 

 grams coffee, with no sugar, at 12 h 24 in p. m. Telephoned twice in each period 

 but last; opened food aperture, without rising from chair, twice in both first 

 and second periods and once in third period; urinated about 4 h 30 m a. m. 

 and once in each period of experiment except first; activity slight otherwise; 

 reading most of time. Said first two cupfuls tasted very good, next two 

 cupfuls taken with difficulty, and could take but little afterwards. Slight 

 dizziness after 12 o'clock; urinated more freely than usual but drank no water. 

 Body-temperature: 36.86, 36.76, 36.92, 36.71, 36.76 C. Pulse rate, 63; 

 respiration rate, 18. 



'See table 215, p. 284. 



