INDEX 



Streams, 103, 106 

 Sublimation, 92 

 Submarines, 119-120 

 Sugar, 222, 224, 227-231 

 Sun, 351-354, 367-369 



atmosphere of, 337~338 

 distance of, 352-353 



Teeth, 8, 10, 277, 305-307 

 Telegraphy, wireless, 172 

 Temperate living, 67-70, 73-74 

 Temperature, 86, 140-147 



boiling, and freezing, 86, 99, 146 



in relation to volume, 140-141 



of human body, 27-29 

 Tempering, 203-205 

 Tenacity, 155 

 Tendons, 2 



Theories, as to light, 338-339, 344~ 

 347 



in astronomy, 337 



of conduct, 293-295 



of education, 294, 296-29; 



of science, 71, 152, 160, 162, 



181-182, 186 

 Thermometers, 140-142, 146-147 



clinical, 35 



Thermos bottle, 117, 145 

 Thrift, 134, 209-213, 235, 290-203 

 Timekeeping, 359-363 



international date line, 361 



local time, 359 



standard time, and time belts, 



360-363 



Tobacco, 74, 79, 211 

 Tonsils, 5 

 Tornado, 125-127 

 Toxins, 40-41, 45 

 Transpiration, 270, 314 

 Transportation, 53, 85, 281-283 

 Trees, 254-263 



planting, and uses of, 256-259 



studies of, 259-263 



Tuberculosis, 25, 39 

 Typhoid, 37-38 



V 



Vaccination, 37-38 

 Vaporization, 90-96 



heat of, 94-96 

 Varnish, 273 

 Veins, valves in, 34 

 Velocity, 157, 337, 350-351 

 Ventilation, 20-21, 23-25, 122 

 Volumes of bodies, changes in, 20, 88, 

 93, 116-124, 141-142, 146- 



W 



Wage earning, 283-284, 290-291, 



295 



Washing powders, 178, 191 

 Waste, 26, 29, 32, 35, 42, 49~5o, 61- 

 62, 66-68, 74-75, 82, 103- 

 105, 134, 160, 206, 212, 218, 

 257, 279, 293 

 Water, and plant growth, 269 

 as a drink, 7, 49, 224 

 carbonated, 88-89 

 "hard" water, 178-180 

 in the breath, 23 

 in relation to health, 53-57 

 peculiar behavior of, 141 

 properties of, 86-90 

 purification of, 53-57 

 sources of infection, 50, 53-54, 



56 



supply of, 53-57 

 uses of, 52-53, 56, 85 

 Water in the atmosphere, 93-94, 



123-126 

 Weather, 133-140 



and health, 113, 133-136 

 due to highs and lows, 137-140 

 forecasts of, 137-139 

 protection from, 133 

 Weight, 156 



