THE FARMER'S MAGAZINE. 



139 



Showini 



Table IX. 

 ; the Manures employed, and the Produce obtained, ia the Killerton Experiment of Alternate HuBbandry.couducted 

 with Artificial Fertilizera only, by T. D. Acland, Esq. 



Seasons. 



1855.... 

 1856.... 

 1857.... 

 1858.... 

 1859.... 



Crops. 



Swede turnips. 

 Buff wheat . . . 

 Swede turnips. 

 Barley ....... 



Mangolds 



Yearly quinquennial means of ma- "I 

 nures per acre J 



It is impossible for any one who runs his eye down 

 the column of yearly produce not to be convinced that 

 Mr. Acland's system of extraneous manuring has kept 

 the experimental plots in full heart. 



These Rothamsted and Killerton cases are the only 

 recorded instances in which the effects of extraneous 



manuring have been exemplified in rotation cropping. 

 But the following Rothamsted experiments in successive 

 corn-growing, where artificials only were used, are still 

 more demonstrative of the ability of these to impart a 

 very large degree of sustained fertility to the soil : 



Table X . 

 Showing various Experimental Instances of Successive Wheat-growing — Ist, with No Manure ; 2nd, with Farmyard Dung 

 extraneously obtained ; and 3rd, with Artificial Manures only, of the kiud enumerated in a former Table, extracted from 

 Messrs. Lawes and Gilbert's paper on "Agricultural Chemistry" (Royal Agricultural Socuty's Journal, vol. xii., 1851), 



