On the Growth of Barley htj different Manures, ^'c. 469 



(luring six consecutive Years on the same Land — 1852, 53, 54, 55, 50, and 1857. 

 Kothamsted, Herts.) 



Dressed Corn in 100 Total Corn. 



1856. 1857, 



A -erage 

 Annual. 



Uilference according to Manure. 



With what Standard compared. 



Standard Series. 



83'(5 

 8G-5 



91'5 95'4 



94*8 

 93* 9 



90-3 

 92*0 



More than Unraannred. 



Mineral Manures, ouly. 



More than Unmanured. 

 More tlian Unmanured. 

 More than Unmanured. 



Alore than Unmanured. 



Ammonia ; both without and with ilirect Mineral Manures. 



More tlian Unmanured. 

 Less than Unmanured. 



Lc?s than " Mixed Alkalies " (No. 4). 



Less than Superphosphate of Lime (No. 5). 



Less than Superphosphate of Lime, and " Mixed Alkalies 



Less than Moan of Mineral Series. 



■ (No. (i). 



Ammonia ; both without and with direct Mineral Manures 



More than Unmanured. 

 Less than Unmanured. 

 More than Unmajiured. 



Less than " Mixed Alkalies " (No. 4). 



Less than Superphosphate of Lime (No- o). 



Less than Superphosphate of Lime, and " Jlixcd Alkalies" (No. G). 



Less than " Mixed Alkalies" (No. 4). 



Less than Superphosphate of Lime (No. 3). 



Less than Superphosphate of Lime, and " Mixed Alkalies "(No. G). 



Less than Mean of Mineral Series. 



t Taken for 5 years only. 



VOL. XVII r. 



2 I 



