Tongue, 7, 9, 10, 257, 259. Tonsil, 256. Tourniquet, 321. Toxins, 22. Trachea, 134. _See also_ Windpipe. Triceps, 206. Trypsin, 16. Tubercle bacillus, 157, 158; toxin of, 164. Tuberculin test, 164. Tuberculosis, deaths from, 156; effects of, 123, 201; expense of, 158, 161; kinds of, 152-154, 157; prevention and cure of, 157-164, 309; symptoms of, 164, 165. Turner, 147. Turnips, 60. Tympanum, 257, 267, 268. Typhoid, bacillus of, 286, 295; effect of, on heart, 125; from milk, 37, 38; from water, 79-81; in Germany, 80. _See also_ 201, 309. Ulna, 213. Urates, 199. Urea, 199, 200. Ureters, 200. Urinary system, 200. Urine, 11 _note_, 132, 200, 201. Vaccination, 295-299. Vaccine. _See_ Antitoxin. Vaccinia, 299. Vacuum, process, of cleaning, 153, 154; of milking, 36. Valves, of heart and veins, 116-118; disease of heart, 123, 124-126. Vegetables, fuel value of, 26, 31, 32, 40, 56, 57, 58; in diet, 23-25, 59, 201; salts in, 57, 59; water in, 56, 72. Veins, denned, 108; function of, 110-113; position of, 113. _See also_ 9, 17. Vena cava, in, 113, 115, 116, 118, 119, 200. Ventilation, diseases from poor, 154; methods of, 144-149; need of, 141-143. Ventricle, 115, 116, 117, 118. Vertebrae, 212. Vitreous humor, 260. Vitriol. _See_ Sulphuric acid. Vocal cords, 272-275. Voice, 271-276. Warts, 195. Wastes, disposal of, 75-77, 78, 79; in the body, 70, 71, 196, 208. Water, body's need of, 69-71, 201; boiled, 87, 88; carbon dioxid in, 74, 83; filtration of, 74, 75, 83, 85, 86, 88; in food, 71, 72; marsh, 74; minerals in, 75, 77, 83; natural purifiers of, 72, 74-79, 86, 87; rain, 73; sources of impurities in, 72-80; supply 75, 79-86; when and how to drink, 15, 57. Water-brash, 13. Wells, artesian, 81-83, 86; dangers to, 75-77, 78, 79; permanent, 83. Wheat, 27, 31; fermented, 94; food value of, 42; whole, 46. Whiskey, 94, 95. _See also_ Alcohol, Beverages. White matter, 219, 221. White swelling, 157. Whooping cough, 290, 291. Windpipe, 134-136, 271, 272. Wine, 94. _See also_ Alcohol. Wings, 254. Wounds, treatment of, 315-319. Yale. _See_ Seaver. Yeast, as leavening, 43-45; in making alcohol, 93, 94, 309. Yellow fever, 287.