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bag in the tumbler. Arrange four in the same way. Put a gill of 

 sand, gravel, loam and clay respectively in each of the bags. Pour a 

 gill of water through the soil in each glass, being careful to have all 

 pass through the soil and not the cloth. After six hours compare the 

 amount of water in the glasses. Which soil retained the most water? 



Soil. 



No. 1. Sand. 

 No. 2. Gravel. 

 No. 3. Loam. 

 No. 4. Clay. 



Water in Soil. 



Soil in Water. 



Temperature. 



Effect of freezing upon soil; upon water in a bottle. Frozen water 

 pipes. 



Eelate experiments to rainfall and its effect upon soil; to formation 

 of flood plains; to material carried in suspension by streams; forma- 

 tion of springs; effect of heat and moisture of soils to plants and 

 animals. 



Eemove bags containing soils and expose them to different condi- 

 tions of air a dark, cool place, sun light and wind. Which soil 

 yields its moisture most readily, and under what conditions. Kelate 

 iliis to exposure of fields to atmospheric conditions. 



Germinate seeds under different conditions of soil, moisture and 

 atmospheric conditions. 



DECEMBER. 



PLANTS. 



Dormant condition of plant life. Compare the buds on different 

 trees; can you distinguish the leaf and flower buds; the live and frozen 

 buds? Which buds have the most effective covering? Open a few 

 to note internal conditions. Which is most destructive to twigs and 

 buds, continued cold or a variable temperature, very dry or very wet 

 soil? What effect has the heaving of the soil on the roots of plants? 



ANIMALS. 



Compare life conditions in an aquarium with condition in cocoons 

 and nests collected. What changes, if any, are taking place in each? 

 What insects have you observed that develop without metamorphosis; 

 incomplete metamorphosis; complete metamorphosis. 



