f, 199

Phagocytosis, 86

Plague, 182
transmission by animals, 183

Plasmodium Malariae, 175

Preventive medicine, 242

Protozoa, 124
distribution in nature, 125
mode of growth, 125
sexual differentiation, 125
spore formation, 125

Polyomyelitis, 190

Repair, 46
conditions influencing, 47

Scar, 49

Skin, 21

Sleeping sickness, 173

Smallpox, 187

Spontaneous generation, 106

Sunburn, 83

Syphilis, 193

Tetanus, 142

Thymus, 52

Thyroid, 37

Tonsils, 52

Toxins, 144

Tropisms, 93

Trypanosomes, 172

Tuberculosis, 163
infection by sputum, 169
modes of extension, 163

Tumors, 64
benign and malignant, 69
cells of, 66
color, size and shape, 65
growth of, 65
importance of, 77
origin of, 66
question of increase, 69
theories of cause, 71
treatment of, 77

Typhoid fever, 170

Ultra-microscopic organisms, 128

Virus, 128

Yellow fever, 178

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