14 



T. Lyttleton Lyon and James A. Bizzell 



some samples of the soil from time to time to see whether nitrate forma- 

 tion proceeded in a normal manner in the surface soil. As the apparatus 

 appeared to work satisfactorily, the remaining ten tanks were filled in 

 the course of the summer, and drainage water was collected during the 

 following winter. In the discussion of results the data from tanks 1 and 

 2 usually are not included, because they do not cover the same period as 

 do the remainder of the tanks, and they have been used from time to 

 time to test ways of employing the apparatus. A statement of the soil 

 treatment of each tank, and of the crops raised, is given in table 5: 



TABLE 5. Soil Treatment and Crops Raised on Lysimeter Tanks 1 to 12, during 



THE Period from 1910 to 1914 



The applications of farm manure were made in the spring of 1910 and 

 in the spring of 1914. Both applications were at the rate of 10 tons 

 per acre, and were given to the tanks that were never planted as well 

 as to the cropped tanks. The applications of potassium sulfate were 

 made annually to tanks 11 and 12, at the rate of 200 pounds per acre. 

 No lime was applied to tanks 1 to 6 or to tank 11. In the spring of 1910 

 burnt lime was applied to tanks 7, 8, 9, 10, and 12, at the rate of 3000 

 pounds per acre. 



H 



