66 



Residual effect of Dung stored in different ways. 



Manure applied at the rate of 20 tons of original manure per acre for Potatoes 

 in 1916, followed in 1917 by Wheat without manure. 



Foster's Field. 



EXPERIMENTS 

 WITH VARIOUS NITROGENOUS MANURES. 



Potatoes. Great Knott Wood Field, 1916. 



