Children, results of faulty posture in, 62; sleep required by, 103; effects of alcoholic indulgence by parents on, 243. Choice of foods, effect of slow eating habits on, 47. Cigaret smoking, special evils of, 261. Cigars and cigarets, nicotin in, 254-255; physical and mental effects of smoking, 255-267; increase in use of, 267-268. Circulation, effect of alcohol on, 240-241; effect of tobacco on, 256, 259-260, 263, 267. Circulatory system, death rates from diseases of the, 284, 285. Civilization, hygiene and, 143-156. Cleanliness, importance of, for avoiding infections, 75-76. Clerks, unsuspected impairments among, 136-137. Clothing, relation of, to ventilation, 14; hygiene of, 14; desirability of porous, 14-15, 275; evils of tight, 16; choice of cotton, linen, and woolen, 17; color of, 17-18; artificial conditions as to, resulting from civilization, 147-148. Cocktail drinking, a harmful habit, 67. Colds, popular exaggeration of danger of, from drafts, 8, 123; usual origin of, in germs, 8-9, 70-71; measures for avoiding, 9; sometimes indirectly caused by constipation, 51; popular delusions concerning, 123-124; means of infection, 272; sometimes due to abnormalities in nose or throat, 272-273; prevention of, by attention to rules of individual hygiene, 273; chief preventive measures, 273-277; emergency treatment of, 277-280; possibility of avoiding, altogether, 280. Color of clothes, 17-18. Concentrated foods, objection to, 41, 150. Condiments, hot, to be used sparingly, 48. Constipation, evils of, 51-52; effects of water-drinking habits on, 52; foods which prevent, 52; use of mineral oils for, 53; avoidance of drugs, 53; an enema a temporary expedient, 53; value of massage of the abdomen, 53-54; favored by high-seated water closets, 54; importance of establishing proper habits, 55; poisoning from decomposition of protein in the colon, and remedies, 56; produced by a slouching posture, 57; mental effects of, 106-107; effects of, ascribed to overwork, 124; predisposition to colds caused by, 276. Consumptive stoop, ill effects of, 57. Cooking, loss caused in certain foods by, 42; necessary for some foods, 43. Corn, food value of, 29, 175; cellulose in, 41. Cornaro, "The Temperate Life" by, 142. Corsets, constriction from, 16. Cost, of food, 129-131, 184-190; wholesale, of uncooked ingredients of standard foods, 192-193. Cotton, use of, in clothing, 17. Cottonseed oil, a cheap source of fat, 131. Country life, advantages of, 18. Cousins, marriage of, 305-306. Crawling exercise for faulty posture, 222-223. Cream, food value of, 30, 33, 181. Crime, laws of heredity applied to, 299-300. Cucumbers, cellulose in, 41; food value of, 175. Daily rhythm, observance of a, 89-90.