134 
effect on haemoglobin, 52 
in alveolar air, 30 
in arterial blood at high 
altitudes, 56, 61 
in blood leaving lungs, by 
CO method, 54 
in capillaries at high alti- 
tudes, 57 
in sea water, 62 
Oxygen secretion, 
altitudes, 56, 57 
by lung epithelium, 53, 54, 
56, 57, 63 
in swim bladder of fishes, 
62, 63, 64 
relation to oxygen pressure 
in lungs, 63, 64 
Oxy-haemoglobin, 
tion of, 29 
effect on absorption curve 
of COzg in blood, 33 
properties of, 28 
regulation of blood gases 
by, 72 
Oxy-haemoglobin _—dissocia- 
tion curve, 29, 30 
and COg pressure in blood, 
30, 31 
and inorganic salts in red 
blood cells, 31 
as index of reaction in 
blood, 31 
at high altitudes, 50 
constancy of, 34 
effects of acid on, 31 
effects of alkali on, 31 
at high 
dissocia- 
INDEX 
Paley, 116 
Partial pressure COs, rela- 
tion to barometric pres- 
sure, 13 
Pathological phenomena, 102 
Pathology, 102 
Peak of Teneriffe, 50 
Pfliiger, 53, 108 
Physics and chemistry in life 
phenomena, 105,. 106 
Physiological activities, co- 
ordination of, 1, 2, 26 
Physiology, and clinical med- 
icine, 94 
and structure, 102 
and surgery, 94 
definition, 1 
the “new,” 103 
Pike’s Peak expedition, 47, 
49, 51, 55, 56, 94 
Pituitary gland in physiologi- 
cal regulation, 80 
Poisons, immunity to, 95 
Priestley, 3, 8, 77, 78 
Psychology, 115 
Radioactivity, 107 
Reaction of blood 
blood alkalinity) 
Reaction of urine, 40 
Reality, “objective,” 118 
Red blood corpuscles, 28 
at high altitudes, 50, 51 
destruction, 81 
effect of bleeding on regen- 
eration of, 80, 81 
(see 
