440 



INDEX. 



Taste, 398 

 Teeth, 312, 314 



care of, 315 



structure of, 3i4 

 Temperature, boiling points, 40, 

 42 



condensation, 46 



effect of on gases, 18 



effect of on rocks, 167 



effect of heat on liquids, 15, 

 16, 44 



effect of heat on solids, 13 



effect of t. on climate, 150 



measurement of, 26 



melting points, 39 



regulation of 360, 363, 364, 



398 



Tendon, 378, 379 

 Thermometer, Air, 26 



centigrade, 27, 28, 29, 30 



Fahrenheit, 27, 29, 30 



determination of fixed points, 

 28 



Galileo's, 26 



range of mercury t., 31 

 Thermos bottle, 21, 24 

 Thorax, 317 

 Throat cavity, 310, 317 

 Thunder, 143 

 Thunderstorms, 142 

 Tibia, 373 



Tissues, definition of, 196, 275 

 Tobacco, 328 

 Tongue, 316, 398 

 Tonsils, 317, 354 

 Tornadoes, 142, 144 

 Touch, 397 

 Trachea, 347, 348 

 Trade winds, 140 

 Transpiration, 208, 209 

 Trichina, 308 



Trunk, 371 

 Tuberculosis 354, 376 

 Typhoid and flies, 425, 428 



Urea, 357 

 Ureter, 358 

 Urethra, 358 

 Urine, 358 

 Uvula, 312 



Vaccination, 355, 417 

 Vaccines, 416 

 Valves in heart, 340 

 Vascular bundle, 228, 229 

 Veins, 200, 339, 340 

 Ventilation, 352 

 Ventricles, 338 

 Vertebrae, 371 

 Vertebrates, 254 

 Vessels, blood, 324, 342, 368 



lymph, 324, 342, 343 

 Villi, 326 

 Vocal cords, 348 

 Volume, changes in, 47 

 Voluntary action, 390 



Water, 11 Off. 



absorbed by roots, 220 

 composition of, 110 

 contamination of, 428 

 dangers in, 116 

 factor in soil formation, 187 

 factor in starch formation, 



204 



falls, 177, 179, 181, 183 

 filtering of, 117 

 hard, 114 



in the human body, 302, 257 

 plant and animal life depend- 

 ent upon, 115, 198, 211 

 properties and uses of, 111 



