MOUTH- AND NOSE-BREATHING, BENEDICT APPARATUS. 177 



TABLE 27. Respiratory exchange in comparison experiments mth mouth-breathing and 

 nose-breathing Benedict respiration apparatus (tension-equalizer unit). (Without 

 food.) Continued . 



The differences between the average values obtained with the two 

 methods are given in table 28, the values with the nose-breathing being 

 used as the base-line. The agreement between the results obtained 

 with the two methods in the individual experiments is, as a whole, 

 very fair. The greatest variations for the carbon-dioxide elimination 

 are those for H. F. T. on June 27 and September 9, when the amounts 

 obtained with the mouth-breathing exceeded those with the nose- 

 breathing by 11 c.c. and 12 c.c. respectively, and for K. H. A. on Sep- 

 tember 30, when the carbon-dioxide elimination with the mouthpiece 

 was 16 c.c. higher. On the contrary, in two experiments with K. 

 H. A., the results obtained with the mouth-breathing were slightly 



