INDEX 



127 



effect of CO2 pressure on, 



34 

 effect of cutting vagus 



nerves on, 21, 25, 26 

 effect of oxygen deficiency 



on, 42, 43 

 effect of partial obstruc- 

 tion on alveolar CO2, 13 

 essential factors in, 3 

 extent of voluntary con- 

 trol, 11 

 frequency relation to alve- 

 olar CO2, 12 

 in diabetes, 35 

 in regulation of alveolar 



CO2, 7, 9, 11, 14 

 influence of vagus nerve 



on, 21, 22, 23, 24, 26 

 influence of vagus nerve in 



man on, 23, 24 

 "mechanism" in regulation 



of, 16 

 regulation of, 7, 9, 11, 14, 

 26, 27, 38, 40, 42, 43, 46, 

 47 

 regulation of, in oxygen 



deficiency, 43 

 vagus nerve in regulation 



of, 21, 22, 23, 24 

 "vitalism" In regulation of, 

 17 

 Breuer, 21, 23 



"Buffer substances" in blood, 

 36 

 in urine, 40 



Canaries, in detection of 

 small percentages of car- 

 bon monoxide, 46 

 Capillaries, activity of walls 

 after bleeding and trans- 

 fusion, 80 

 passive congestion in regu- 

 lation of venous pres- 

 sure, 74, 75* 

 Carbon dioxide, 3, 4 



absorption curve in blood, 



32, 33, 34 

 absorption in blood, 41 

 absorption in blood during 



violent exercise, 41 

 effect on divers, 19, 20 

 effects on circulation, 15 

 in arterial blood, 27, 32 

 in chemical combination in 



blood and plasma, 31 

 in inspired air, effect of 



high percentage of, 9 

 in regulation of gaseous 



contents of blood, 72 

 "mass influence" of, 32 

 regulation of circulation 



rate by, 76 

 relation of barometric 

 pressure to partial pres- 

 sure of, 13 

 removal in a vacuum, 32 

 secretion by lungs, 67 

 Carbon dioxide in alveoli, 

 and frequency of breath- 

 ing, 12 

 at high altitudes, 47 



