— 8 — 



On the following pages the results of Table III are shown in 

 diagrammatic form, the black lines representing the water and 

 the colored the various other constituents. In order to make the 

 differences clearer the colored plate is enlarged five times, or in 

 other words each inch in length of the black lines represents a 

 yield of 6,000 pounds of water per acre, and each inch in length 

 on the colored plate represents a yield of 1 , 200 pounds of the other 

 constituents per acre. The figures refer to the numbers in Table I. 



