52 56 57*61 627l 72'8i 82'9i 92*01 02*14 I3'l9 



Fig. 1. — Barley yields, Hoos Field, Rothamsted, showing steadiness of 

 Farmyard Manure efEects as compared with Artificials. 



62 



45 



tush 



45 



cwr. 



Grain. 



Str 



aw, 



4£ 



cwr. 



bush 



cwr. 



rain 



St 



raw, 



Clover. Wheat. 



Farmyard Manure. 



TO PREVIOUS CORN CROP. 



Clover. 



Arfifi 



Wheat. 



cials. 



TO PREVIOUS CORN CROP. 



•Fig. 2.— Effect of Farmyard Manure and of Artificials on Clover and succeeding Wheat Crop. 



