INGESTION OF CARBOHYDRATES. 



235 



ment in the heat production ranged from 8 to 19 calories with an 

 average of 14 calories. The total increments found with the different 

 amounts of dextrose are noticeably unlike. 



LEVULOSE. 



The results obtained in the experiments with levulose are given 

 similar treatment in table 175. The increments for carbon-dioxide 

 production ranged from 9.9 to 23.3 grams with 100 grams of levulose, 

 with an average value of 18.2 grams. Those for oxygen consumption 

 varied from 3 to 8.3 grams, with an average of 5.1 grams, while the 

 total increments for heat production ranged from 12 to 36 calories, 

 averaging 24 calories. The two experiments with 75 grams of levu- 

 lose are so widely divergent in their results that the data are of doubtful 



TABLE 175. Total increment of carbon dioxide, oxygen, and heat following ingestion of 



levulose in respiration experiments. 



from the time when subject finished eating to the end of the last observation, except 

 in cases when the increment of heat ended earlier. See tables 140 to 148 for complete observations. 



value, but as both show a positive increment for all three factors, they 

 are included in this comparison. The average values for the two experi- 

 ments are not far from the averages for the larger amount of levulose. 



SUCROSE. 



The experiments with 100 grams of sucrose, which are compared in 

 table 176, show total increments in the carbon-dioxide production 

 ranging from 9.8 to 26 grams and averaging 16.1 grams. In the experi- 

 ment with L. E. E., May 15, 1911, approximately 6 grams additional 

 excess carbon dioxide were obtained in the later periods of the experi- 



