764 



CHEMISTR Y OF RESPIRATION. 



less than in the normal condition, the blood undergoing comparatively 

 slight changes in its passage through the capillaries. 



The following are some of the results obtained by Zuntz : 



Calculated from these results, the respiratory exchange before the section 

 of the nerves was 1'21 c.c. oxygen and 1*32 c.c. carbon dioxide per minute; 

 after section of the nerves, 0*68 c.c. oxygen and 0'65 c.c. carbon dioxide. 



Chauveau and Kaufmann 1 estimated the gaseous exchange in the 

 masticatory muscles of the horse, both when it was at rest, and when it 

 was actively chewing. The following table gives their results, together 

 with those of somewhat similar experiments made by Sczelkow, 2 Hill 

 and Nabarro : 3 



In the above table the amounts found during activity are multiplied 



1 Compt. rend. Acad. d. sc., Paris, 1886, tome ciii. pp. 974, 1057, 1153, 

 !. d. k. Akad. d. Wissensch., Wien, 1862, Bd. xlv. S. 171. 



3 Journ. Physiol., Cambridge and London, 1895, vol. xviii. p. 218. 



