INGESTION OF CARBOHYDRATES. 



187 



A. H. M., April 2, 1906 (1,121 grams bananas and 86 grams sugar, 

 with a total fuel value of 1,448 calories). The values for both the 

 carbon-dioxide excretion and the heat production recorded in table 112 

 indicate an increase in all of the periods of this experiment ; the oxygen 

 consumption also showed an increment in the first three periods. The 

 respiratory quotients were in all cases high, the first quotient being 

 above 1. A fairly uniform picture of increased metabolism was thus 

 shown throughout the entire observation. 



TABLE 112. A. H. M., April 2, 1906. Sitting. (2-hour periods.) 



Bananas and sugar: 



Amounts, 1,121 grams bananas, 86 grams sugar; nitrogen, 2.34 grams; total energy, 1,468 



cals. 

 Fuel value: Total, 1,448 cals.; from protein, 4 p. ct. ; from fat, 4 p. ct. ; from carbohydrates, 



92 p. ct. 



Nitrogen in urine, 0.79 gram per 2 hours. 1 

 Basal values (February 12 and 14, 1906) : CO2, 45 grams; O2, 40 grams; heat, 142 cals. 



1 Sample included amount for about if hours preceding the eating of food. 

 2 Subject ate food in 27 minutes. 



A. L. L., April 19, 1906 (763 grams bananas and 99 grams sugar, 

 with a fuel value of 1,147 calories).- In this second experiment with 

 A. L. L. the amounts of bananas and sugar eaten were almost identical 

 with those taken in the experiment of March 30, 1906, but the observa- 

 tions continued for 12 hours instead of for 8 hours, as in the duplicate 

 experiment. The results are given in table 113. The carbon-dioxide 

 excretion remained above the basal value in all of the six periods, 

 although the increases in the first two periods were the most striking. 

 An increase in oxygen consumption was found in the first and second 

 periods, with slight variations above or below the base-line in the fol- 

 lowing periods. The increase in heat production was very marked in 

 the first three periods. A striking anomaly is a decrease of 25 calories 

 in the last period, illustrating one of the defects of short-period deter- 

 minations with this large calorimeter. The general picture with all 

 three factors is a noticeable increase in the metabolism. 



The total increases in these duplicate experiments do not give a wholly 

 satisfactory comparison. Thus, in the experiment of March 30 there 

 was an increase in the carbon-dioxide excretion of 56 grams, while 



