Dandruff, 109

Dante, 77

Darwin, 17, 46

Dentistry, 126, 190

Determinists, 57

Diet, 131

Diet Standards, 135

Digestion, 145

Diphtheria, 188

Diseases, 107, 117

Dogs, 17

Draft, 182

Drugs, 118, 150, 185, 189

Dubb, 63

Duncan, 102

Dyspepsia, 117

Eddy, 65

Edison, 45, 86

Einstein, 101

Elberfeld horses, 68

Evolution, 8, 17

Exercise, 163

Faith, 9

Faith curists, 65

Fast cure, 171

Fatness, 139

Fats, 124

Fever, 108

Fireless cooker, 142

Fireplace, 157

Fisher, 136

Fletcher, 119, 145

Food filter, 145

Fourth dimension, 5

Free thinker, 15

Freud, 71

Fruit fast, 175

Frugality, 38

Frying-pan, 129

Furnace, 157

Gargles, 184

Gastronomic art, 148

Genius, 49, 60

George, 18

Germs, 183

G.o.d, 22, 50

Goethe, 47

Golden rule, 51