124 
Alkali, effect on alveolar 
COzg, 35 
effect on dissociation curve 
of oxyhaemoglobin, 31 
Alps, 50 
Altitudes, acclimatisation at, 
48, 56, 58, 59 
alveolar COg at, 47 
alveolar oxygen pressure 
at, 61 
arterial oxygen pressure at, 
58, 61 
blood reaction at, 50, 51 
circulation rate at, 57 
dissociation of oxy-haemo- 
globin at, 50 
effect of muscular exertion 
at, 56 
effect on blood volume, 52 
effect on breathing, 47, 48 
effect of oxygen deficiency 
at, 47, 49 
increase of red blood cor- 
puscles at, 51 
oxygen consumption at, 57 
oxygen pressure in blood 
at, 56, 57, 61 
oxygen secretion at, 56 
percentage of haemoglobin 
at, 51, 52, 56, 57 
secretion of oxygen by 
lungs at, 53, 54, 56, 57 
Alveolar air, COe percentage 
in, 8, 9, 10, 11, 12, 13, 14, 
15 
oxygen pressure in, 30 
sampling of, 8 
INDEX 
Alveolar carbon dioxide 
and Hering-Breuer in- 
hibition, 25 
at high altitudes, 47 
calculated for dry air, 14 
constancy of, 8, 10 
during severe exertion, 27, 
41 
effect of acids on, 35 
effect of alkalis on, 35 
effect of diabetes on, 35 
effect of diet, 35 
effect of increased oxygen 
pressure on, 49 
effect of oxygen deficiency 
on, 27 
effect of partially ob- 
structed breathing on, 13 
effect on breathing, 8, 9, 
10, 11, 12, 13, 14, 15 
in acidosis, 27 
regulation of breathing by, 
7, 9, 11, 14 
relation to barometric pres- 
sure, 14 
Alveolar carbon dioxide 
pressure, and percentage, 
relation to barometric 
pressure, 14 
during rest, 27 
relation to alveolar oxygen 
pressure, 49 
Alveolar oxygen, 
of, 10 
effect on breathing, 8 
regulation of, 10 
constancy 
