NATURE-STUDY WITH SOILS 



Water as a solvent. Crystal growth. Blue vitrol, alum, 

 salt, sugar, potassium bichromate, snow, frost. 



Quartz, how to identify. Various quartz crystals, their 

 appearance and uses. 



Felspar, how to identify. Its two chief forms. 



Mica, how to identify. Its many uses. 



Granite, how composed. Its uses. 



Clay, of what composed. Sand. Gravel. 



Calcite. Marble. Limestone. 



Experiments to show the action of water in clay, sand, 

 loam and humus. 



Proper treatment of clay soil. Acid soils. 



NATURE-STUDY WITH METEOROLOGY 



The wind, what it is, what causes it. 



The winds of the world. Windmills. 



The atmosphere, its height, pressure, and temperature. 



Experiment to show air pressure. The thermometer. 

 Construction and use of barometer. 



Water, Condensation, experiment to show it. Evapora- 

 tion: steam, water vapor, shown by experiment. 



The condition necessary for forming clouds, fog, rain, dew, 

 frost, ice, sleet, snow, and hail. 



Storms, their cause; how they are forecast. 



How to read he weather maps. Isotherms, isobars 



The U. S. Weather Bureau, Weather Flags and signals. 



School room weather records for primary and grammar 

 grades and for junior science pupils. 



