Dissolved bone black, 346 lbs. 



Muriate of potash, 150 lbs. 



Sulphate of ammonia, 56 lbs. 



The average cost of this mixture has been $11.00, and as 

 there has been three applications since 1885 it follows that each 

 acre has received $33.00 worth of fertilizer; the third having 

 $33.00 worth of manure, and the fourth $33.00 worth of chem- 

 icals. 



The first year the crop was corn, the second year corn, the 

 third oats, and the fourth grass. 



The following table shows the yield of each acre for each 

 year, and also the value of the crop, assuming eighty pounds of 

 corn as harvested to be worth sixty cents, thirty-four pounds of 

 soft corn ten cents, and fodder thirty cents per hundred ; oats 

 fifty cents per bushel, straw thirty cents per hundred, and hay 

 ten dollars per ton : 



*.Si>uiid corn, 40 lbs. per bushel ; soft corn, 34 lbs. per bushel. tOats, 32 lbs. per bushel. 



The cost of applying the manure was $2.80, and for the 

 three ajiplications of chemicals $1.44. 



This experiment has been carried out with the expectation 

 of continuing it for two or three years more with grass, after 

 which the same fertilizer should be repeated. 



It will be seen from the plan of the field on page 12 that 

 the plot experiments were inunediately adjoining the fourth 

 acre, and from the table on page 14 the following yields from 

 plots G,i6, 19, and 24 are obtained as the natural capacity of the 

 soil, no fertilizer of any kind being used on them ; corn, 



24 



