Eruption of measles, 372. Eucalyptus trees and malaria, 378. Evaporation from reservoirs, 103. Exercise, after meals, 271; of the body, 278. Expectorations in cases of consumption, 334. Exposure, and pneumonia, 346; of a house, 29. External causes of disease, 312. Eyes and their troubles, 290. Factory life and disease, 301. Fall River, Mass., water used in, 93. Faucets for plumbing, 195. Field-stone dam, 160. Filter beds for sewage in winter, 221. Filtration of sewage, 219. Finishing concrete surfaces, 67. Fire protection and water-supply, 98. Fire streams and water flow, 97. Fish as destroyers of mosquitoes, 381. Fixtures for plumbing, 191. Fleas and the bubonic plague, 393. Fletcher, and chewing, 259; and his two meals, 269. Flies and typhoid fever, 359. Floods and stone dams, 161. Floor of cellars, 59. Flow of underground water, 111, 143. Flush tank for water-closet, 206. Food, for consumptives, 340; for various body needs, 258. Food adulteration laws, 416. Foods and beverages, 257. "Foos" gas engine, 178. Formaldehyde, 321. Forms for concrete cellar walls, 65. Foul-air outlet for ventilation, 81. Foundation for dam, 160. Freezing in plumbing, 190. Fresh-air inlet for ventilation, 77. Friction with fire streams, 98. Fried foods, 269. Fuel for pumping, 178. Galvanized iron water tanks, 185. Garbage for filling low ground, 37. Gas engines for pumping, 177. Gastric juice, 260. Gate house for reservoirs, 165. Goiter and soils, 33. Goulds Manufacturing Co. pumps, 181. Grade, for house drains, 45; for cellar drains, 51; of subsurface tile, 222. Ground water, 43. Growth of mosquitoes, 384. Habit and food, 267. Hand basin in bath-room, 199. Hands to be washed frequently, 287. Hand valves for sewage tanks 227. Hard water, 133. Health departments, 416. Heat, and plumbing, 190; as a disinfectant, 327. Heating and ventilation, 87. Heredity and health, 298. Homer, N. Y., water-supply, 105. Hookworm disease, 302, 388. Hot-air engines for pumping, 175. Hot-water boiler, 198. Hot-water circulation, 194. House drainage, 200. House drains, 44. Hydraulic rams, 171. Hydrophobia, 407. Hygiene, and its laws, 410; and its true purpose, 23. Ice and typhoid fever, 353. Ideality of life, 22. Immunity--natural and artificial, 310. Importance of bacteria, 305. Impurity of surface water-supply, 140. Indians and ventilation, 74. Indirect causes of death, 312. Infection in pneumonia, 348. Influenza in the country, 19. Inlet for fresh air, 78, 81. Inspection of dairies, 421. Installation of plumbing, 189. Intermittent application of sewage on land, 213. Iron pipe for conveying water, 167. Irrigation and sickness, 36. Irritation of cell tissue, 297. Ithaca typhoid epidemic, 354. Joints in soil-pipe, 203; in tile pipe, 167. Kerosene and mosquitoes, 383. Kewanee Water Supply Co. tanks, 187. King of ventilation, 86. King's experiments on ventilation, 70.