27 



Average of the nothing plots ; hard corn, 23.8 bushels ; soft corn, 

 5.4 bushels ; stover, 2508 pounds. 



The field for this experiment was upon an elevated tract in a hilly 

 district, but was nearly level. The soil was a good medium loam 

 and had been in grass without manure for five years. It appears to 

 have been of tolerably even quality throughout the field. 



When visited in July Nos. 13 and 10 appeared best and were about 

 alike. 



No. 9 was about as large as No. 10 but its paler color was very 

 noticeable. 



Between the other plots the differences were not striking, except in 

 the case of No. 7 which appeared nearly as good as either 10 or 13. 



Potash seemed, therefore, at this time to be producing the most 

 marked results. 



In August the relative standing was similarly judged. 



RESULTS OF MEASUREMENTS. 



These measurements show no falling off in the relative standing of 

 nitrate of soda ; and confirm the estimate placed upon the plots which 

 received potash. 



