TABLE OF CONTENTS 



CHAPTER I 



PAGE 



ATMOSPHERIC MOISTURE AND EVAPORATION 1 



Evaporation. Effects of Evaporation. Moisture Getting into the 

 Atmosphere. Experiments on Evaporation. Iceless Coolers. Man- 

 ufacture of Ice. Relation of Evaporation to Life. Humidity. Hu- 

 midity Tables. Moisture in the Atmosphere. Hygrometers. School- 

 room "Deserts." 



CHAPTER II 

 MOISTURE COMING OUT OF THE ATMOSPHERE 21 



Dew. Frost. Black Frost. Hoar Frost. Ice Storms. Fog. Mist. 

 Clouds. Air Losing its Moisture. Hail. Snow. Rate. 



CHAPTER III 

 THE ATMOSPHERE 39 



Atmospheric Pressure. Pumps. Siphons. Air has Weight. 

 Barometer. Tables Showing Average Weight and Skin Surface. 

 Blood Pressure. Air Pressure Varies. "The Bends." Caisson. 

 Aneroid Barometer. Barograph. Aviators' Barometer. Effects of 

 Temperature on Air Pressure. Ventilation. Soil Ventilation. Drafts. 

 Cyclones. "Lows." Velocity of Winds. Isobars and Isotherms. 

 Floor Map. Weather Forecast. Whirlwinds. Belt of Calms. Sea 

 Breeze. Land Breeze. Monsoons. Trade Winds. Tornadoes. 

 Weather Signals. Weather Charts. Prediction of Weather by Spe- 

 cial Observations. Boiling Point. 



CHAPTER IV 

 TRANSMISSION OP HEAT 87 



Radiation. Source of Heat. Radiant Energy. Dull and Shiny 

 Objects. Radiation in the Home. Radiometer. Conduction. Fire- 

 less Cooker. Refrigerator. Thermos Bottle. Convection. Why 

 Water Carries Heat. Hot Air Heating. Steam Heating. Hot Water 

 Heating. 



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