Kitchen sinks, 196. Kitchen stove and hot water, 195. Koch and consumption, 333. Land treatment of sewage, 216 Laundry tubs, 196. Law and hygiene, 410. Laws against impure food, 416. Lesions of tuberculosis, 252. Level for house drain, 200. Light, as a disinfectant, 330; in cow stables, 62. Lime for disinfecting, 324. Liquid disinfectant, 321. Location, of a house, 29; of a house on a side hill, 32; of privies and cesspools, 31; of windmill, 171. Long Island wells, 112. Loss of head by friction, 129. Lowell typhoid epidemic, 355. Lungs, air required by the, 68; developed by exercise, 279. Made ground and health, 37. Malaria, 302, 377; caused by soil formation, 33; from cellars, 39. Malarial attacks, 385. Manure from cow stables, 244. Maximum rate of water consumption, 95. Measles, and its virulence, 371; preliminary symptoms, 367. Meat and its dangers, 249. Mercury as a disinfectant, 324. Metchnikoff's theory of auto-intoxication, 233. Methods of collection of water, 153; of securing fall for hydraulic rams, 175. Milk, and its adulteration, 419; and its care, 233; and typhoid fever, 358; of lime, 325; supply of Rochester, N. Y., 237. Milk-pail for clean milk, 245. Mineral matter in water, 132. Minimum rainfalls, 100. Mixing concrete, 66. Moisture and its dangers, 39. Montclair typhoid epidemic, 359. Mosquitoes, and malaria, 380; and yellow fever, 387. Mount Savage typhoid epidemic, 357. Mouth breathing, 287. Muslin cloth to prevent drafts, 81. Narrow-topped milk-pail, 245. Natural immunity, 310. Need for rural hygiene, 21. Newton, Mass., water used in, 92. New York State, death-rates in, 6. Night air and malaria, 26. Objectionable construction work at a spring reservoir, 154. Objections to brooks as source of water-supply, 125. Occupation and disease, 301. Old age mortality in the country, 20. Openings for ventilation, size of, 85. Organic matter, in soil, 38; in the air, 76. Outfall for cellar drain, 52. Outlet, for drains, 47; for foul air, 81. Ownership in streams, 415. Oxygen in the air, 75. Oysters and typhoid fever, 361. Pancreatic juice and digestion, 261. Parasites as causes of disease, 302. Pasteurization for typhoid fever, 352. Patented disinfectants, 317. Patent medicines, 276. Peeling, in measles, 373; in scarlet fever, 369. Pellagra, 391. Pipe lines, 165. Plank dam, 159. Pleasure in eating, 270. Plumbing, 189; and heating, 190; and water consumption, 93. Pneumonia, 333; germ, 344; in the country, 20. Pollution, of streams, 211; of water, 414; of water by animal matter, 136; of wells, 142. Ponds or lakes as water-supply, 127. Position of fresh-air inlet, 81. Precautions on part of consumptive, 337. Preparation of rabies antitoxin, 309. Pressure for water-supplies, 128. Pressure tanks, 186. Prevention of pneumonia, 346. Principle of hygienic law, 411. Privy, construction of, 61.