July i, 1920 



Universality of Field Heterogeneity 



297 



Combining yields in a 2 by i fold manner, we find for the correlation 

 between the yields of adjacent Vuo-acre plots 



For 1895,7= + 0.830 0.019, r/E r = 43.4. 

 For 1896,1-=+ .8is .021, f/E r = 39.6. 

 For 1897, r=+ .6o6 .039 r/E r = 15.5. 



It is evident that the field was rather highly heterogeneous. 



KlO. 8. Diagram showing yield of ear corn, 1915, 

 expressed in pounds per quarter plot. 



on the Huntley experimental tract. The yield is 



