132 
Lactic acid, formation during 
muscular exertion, 35, 
41, 50 
formation in oxygen defi- 
ciency, 35, 50 
in urine after violent mus- 
cular exertion, 41 
Lavoisier, 3, 108 
Law, periodic, 106, 107 
Liebig, 82, 83 
Life, conceptions related to, 
100 
Life, mechanistic theory of, 
108, 109, 110, 111, 112, 
113, 116 
Liljestrand, 25 
Lindhard, 49, 51, 57 
Liquids, solution of gases in, 
27 
Liver, destruction of red 
blood cells by, 81 
regulation of alkalinity of 
blood by, 39, 40, 51 
regulation of blood sugar 
contents by, 77 
Living matter, 109, 110 
Living structures, character- 
istics of, 66 
molecular activity in, 66, 67 
Ludwig, 34, 53, 63 
Lundsgaard, 36 
Lung epithelium, gaseous ex- 
change by, 52, 53 
function of, 61 
oxygen secretion in rela- 
tion to COz pressure, 62, 
63, 64 
INDEX 
secretion of oxygen at high 
altitudes, 53, 54, 56, 57 
selective secretion by, 62 
Lungs, 4 
blood changes in, 33 
“Materialism,” 108 
Matter, relationship of, 107 
Mavrogorato, 23 
Mayow, 3 
Mechanism, 2, 99 
and regulation of breath- 
ing, 16 
Mechanistic theory of life, 
108, 109, 110, 111, 112, 
113, 116 
of regulation, 5 
Medulla oblongata, 5, 21, 70 
Memory, adaptation in, 97 
Metabolism, effect on vaso- 
motor nerves, 70 
in regulation of circula- 
tion, 75 
nitrogen, 83, 84 
of cell, 85 
on local blood flow, 70 
Micro-organisms, immunity 
to, 95 
Miners, effect of oxygen de- 
ficiency in, 43 
emphysema in, 19 
Mines, CO poisoning in, 45 
COz in air of, 18 
gases in, 7, 18, 45 
ventilation in, 19 
Moreau, 62, 63 
Mountain sickness, 55 
