Fruits, table of food values of, 177, 179. Fuel value, of common foods, 171, 175-183; of ready-to-serve foods, 184-190. Galton, Sir Francis, identified with eugenic movement, 295. Game as food, 48. Games, for giving exercise, 95; advantages possessed by, as recreation, 99. Garters, constriction from, 16. Germany, consumption of alcohol in, 236. _See_ Prussia. Germs, origin of colds in, 8-9, 70-71, 272; destroyed by sunlight, 14; clearing food of, 43; infections through, 69-78. Gladstone, W. E., noted for mastication of food, 46. Glucose, a cheap source of starch and sugar, 131. Gonorrhea, sterilizing influence of, 78. Grate fires as ventilators, 10. Greeks, high ideals of ancient, 4; perfect physical poise depicted in sculptures of, 59; ideal of, in sports, 96. Greens, laxative quality of, 52. Grippe, avoidance of exposure to infection from, 70. Guinea pigs, illustration from, of action of hereditary traits, 313-316. Gums, cleansing the, 84-85. Habits, as to defecation, 55; overcoming acquired, to lead a hygienic life, 134-135. "Habitus enteroptoticus," posture called, 58. Happiness, habit of, 115. Hard foods, benefits of, 40-41. Hats, ill effects of tight, 16. Headache, sometimes caused by constipation, 51; sometimes due to a slouching posture, 57. Health, present world-wide movement for conservation of, 2; influence of, on character, 105-107; mental rewards from, 107-108; influence of the mind on, 108-109; cost of good, 127-128; possibilities of attainment, 141-142. Health foods and drinks, 3. Heart, diseases of, due to focal infection, 82; common causes of troubles of, 90; effect of alcohol on, 240-241; effect of tobacco on, 250, 259-260, 263, 267; death rates from diseases of, 284, 285. Heat, enervating effect of, 11. Heating systems, ventilation and, 10-11. Hens, influence of mind on health illustrated by, 108-109. Heredity, dependence of health of individual on, 164-165; eugenic improvement attainable through control of, 293; discovery of laws of, resulting in science of eugenics, 293-294; traits influenced by, 297-298; distribution of traits, 298-300; desirable and undesirable traits, 300-301; illustrations of laws of, by Andalusian fowl and by guinea pigs, 307-316; application of principles to human race, 316-322. Hill-climbing, as exercise, 94; for overweight, 217. Hodge, Clifton P., fly-trap invented by, 73-74. Home exercise, 94. Hookworm disease, preventive measures, 75. Hot weather, diet in, 34. Houses, disadvantages attached to invention of, 145-147. Housing, hygiene of, 7-14; disadvantages of the poor regarding, 128-129. Humidity of air, how to secure, 11-12. Hurry, habit of, in modern life, 114; as a promoter of indigestion, 150; excessive use of flesh foods due to, 151.