a, 13

Anthrax, 109

Antitoxin, 154

Bacteria, 116
adaptation in, 123
aerobic, 122
anaerobic, 122
artificial cultivation of, 119
distribution in nature, 121
growth and reproduction, 118
mode of action in disease, 144
size, 117
spore formation, 118
substances affecting growth of, 123
toxin production by, 144
variations in, 123

Blood, 35
circulation of, 33, 80
vessels, 32

Body, 22
defenses of, 146
organs of, 28
reserve force of, 50
surfaces of, 22

Brain, 31

Cerebro-spinal meningitis, 188

Chemotropism, 93

Cretinism, 37

Darwinism, 240

Death, 57
decomposition after, 51
rigor after, 60
signs of, 59

Disease, 1
action of poisons, 44
acute and chronic, 219
industrialism as factor in, 243
lesions of, 46
superstitions concerning, 10
urban life as factor in, 244
wealth and poverty as factors in, 246

Ductless glands, 37

Embryo, 77

Epilepsy, 209

Eugenics, 215

Foetus, 32
infection of, 200

Foot and Mouth Disease, 129

Glands, 22

Growth, 62

Heart, 33, 221
disease of, 223

Heliotropism, 93

Heredity, 197
influence of alcohol, 206
of insanity, 209
variations and imitations, 204

Hookworm disease, 179

Immunity, 148
theories of, 149
natural, 150

Infection, 135
from external surface, 136
from genito-urinary surface, 137
from lungs, 138
from mouth, 138
from stomach and intestines, 139
from wounds, 141
in children, 195
in wild animals, 191
latent, 166
mixed, 160
racial susceptibility to, 191
resistance to, 143
by air, 170
by insects, 171

Infectious diseases, 97
carriers of, 185
comparison with fermentation, 108
epidemics of, 98
endemic, epidemic and sporadic forms, 188
modes of transmission, 161

Inflammation, 80
acute and chronic, 95

Injury, 54-74

Insanity, 231
causes of, 232
question of increase, 235

Lesion, 17

Leucocytes, 36
migration of, 92

Living matter, 10

Malaria, 175
role of mosquito in transmitting, 178

Malformations, 211
heredity of, 215

Maternal impressions, 212

Nervous system, 228
disease of, 230
effect of social life on, 233

Neurasthenia, 238

Old age, 51
atrophy in, 51
blood vessels in, 54
causes of death in, 56
in animals and plants, 55
mental activity in, 53

Osmosis, 91

Opsonius, 153

Ovum, 201
fertilization of, 198
infection o