CLOVER DISEASE. 379 



change in the chemical composition of the plant, which again is 

 caused by an altered condition of the soil. The very considerable 

 deficiency of phosphoric acid and potash in the ash of the diseased 

 plant is certainly remarkable (' Zeitschrift der landwirthschaft- 

 lichen Central vereins der Provinz Sachsen,1861,' page 73). 



