METABOLISM DURING CHEWING. 



129 



TABLE 52. A. L. L., April 3, 1906. Sitting. 

 Chewing gum (15 grams). Nitrogen in urine, 0.65 gram 1 per 2 hours. 

 Basal values per 2 hours (April 3, 1906) : COs, 49 grams; 62, 43 grams; heat, 147 cals. 



'Sample included amount for about 7f hours, without food, preceding and 

 following the periods of chewing. 



TABLE 53. H. R. D., April 4, 1906. Sitting. 



Chewing gum (15 grams). Nitrogen in urine, 0.52 gram 1 per 2 hours. 



Basal values per 2 hours: CO 2 , 46 grams (Apr. 4, 1906) ; O 2 , 42 grams (Feb. 6 to Apr. 20, 1006) ; 

 heat, 148 cals. (Apr. 4, 1906). 



'Sample included amount for about 5j hours, without food, preceding the periods of chewing. 



TABLE 54 #. B. W., April 26, 1907. Sitting. 



Chewing gum (80 grams). Nitrogen in urine, 0.87 gram 1 per 2 hours. 



Basal values per 2 hours (Apr. 26, 1907) : COa, 57 grams; O 2 , 50 grams; heat, 166 cals. 



'Sample included amount for about 5 \ hours, without food, preceding the periods of chewing. 

 'Computed from result for actual period of 2 hours by deducting basal value equivalent to 9 

 minutes at beginning of experiment when subject was not chewing. 



