188 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



in that of April 19 it was 74 grams. If the 7 grams increment noted 

 in the last two periods of the experiment on April 19 be deducted, the 

 increment for the first four periods would be 67 grams as compared with 

 the 56 grams for the same period of time on March 30. In both experi- 

 ments the oxygen increment appeared in the first period and was not 

 far from the same in the two experiments. The increase in the heat 

 production was 88 calories in the first experiment and but 72 calories 

 in the second. If, however, the results of the last period of the second 

 experiment be omitted, the increment would be 97 calories, or a little 

 larger than that found in the first experiment. In general the two 

 experiments may be said to be in fair agreement, as both indicate a 

 noticeable rise in heat production following the ingestion of bananas 

 and sugar. 



TABLE 113. A. L. L., April 19, 1906. Sitting. (2-hour periods.) 



Bananas and sugar: 



Amounts, 763 grams bananas, 99 grams sugar; nitrogen, 1.58 grams; total energy, 1,160 cals. 

 Fuel value: Total, 1,147 cals.; from protein, 3 p. ct. ; from fat, 4 p. ct.; from carbohydrates, 



93 p. ct. 



Basal values: (February" to April 6, 1906): CO, 47 grams; C>2, 42 grams; heat, 148 cals. Nitro- 

 gen in urine, 0.71 gram per 2 hours (April 19, 1906). 



H. R. D., April 21, 1906 (1,171 grams bananas and 103 grams 

 sugar, with a total fuel value of 1,561 calories). This was the second 

 experiment with the subject in which bananas and sugar were taken, 

 the amounts being practically the same as those eaten on March 31, 

 1906. The observations in this experiment, however, continued for 

 2 hours longer than in the first experiment. The data are given in 

 table 114. There was a noticeable increase in the carbon-dioxide 

 production, even in the fifth period. Increments were also observed 

 for both the oxygen consumption and the heat production. The 

 respiratory quotients were high, but none of them were over 1. If 

 we omit all of the values found for the last period, the results will be 

 comparable with those obtained in the experiment of March 31 and 

 not dissimilar. In the first experiment the increment for carbon- 



