July 1, 1920 



UniTjersality of Field Heterogeneity 



289 



for the first cutting, figure 5 for the second cutting, and figure 6 for the 

 third cutting in 191 4. 



F,o 5 -Diagram showing yield of alfalfa in second cutting. x^M, on the Huntley experimental tract. 

 ^ ^ The yield is expressed in pounds per quarter plot. 



For the yield of alfalfa on quarter plots for the second cutting in 1913 

 and the first and second cuttings for 1914 and in third plots for the third 

 cutting for 191 4 the correlations are 



1913, second cutting, t- = o.i82 ±0.048, r/Er= 3-79- 



