TO STUDY THE FOEMS OF SOIL MOISTURE 49 



If the weight changed in the oven how do you account 

 for the change? Fill out the table given at the end of 

 the exercise and write over the fourth and fifth columns 

 the name of the kind of soil moisture which each represents. 

 What form of soil moisture is it that fills a post hole as soon 

 as it is dug? Which sample contained the highest per cent 

 of moisture. 



Fig. 21. — A Gasoline Stove Oven, Galvanized Iron Trays, and Tin 



Dishes for Drying Soil Samples. 



