28 



This manure weighed 50 pounds per cubic foot, and at the rate 

 used furnished 1600 pounds to the plot. This rate of application 

 would supply, per acre: nitrogen, 98,9 pounds; phosphoric acid, 

 59.8 pounds; and potash, 141.7 pounds. It is noticealjle that it 

 produced a large increase both of corn and stover ; that this soil needs 

 potash, and that tlie manure is unusually rich in this element. ' 



SUMMARY OF WEATHER OBSERVATIONS. 



June 7tli to Sept. 21st, 1890. 



*]06 days. J. L. Ellsworth, Observer. 



The temperature shows no striking peculiarities ; but the rainfall 

 was small both in June and July, and the crop suffered to some extent. 

 When visited in July much of it was badh' rolled. 



RESULTS OF THE ADDITION OF NITROGEN TO 



Hard corn, bushels per acre 

 Stover, pounds " 



Value of average net increment, 



Financial result, 



RESULTS OF THE ADDITION OF PHOSPHORIC ACID TO 



Nothing. 



Hard corn, bushels per acre, -.6 

 Stover, pounds " -370 



Value of average net increment, 



Financial result, 



