132 BEET-ROOT SUGAR AND 



This manure, costing at Stassfurt about forty dollars 

 per ton, contains the following constituents in the pro- 

 portions set forth : 



Sulphate of potash, . . . 1 8 to 20 per cent. 



" u magnesia, . . 18 u 20 " 



" " lime, 3 " 5 " 



Chloride of sodium, . . . 40 " 42 u 



u u magnesium, . 2 u 3 " 



Magnesia, 2 " 3 " 



Water and sand, . . . . 17 " 7 " 



100 100 



This manure is spread upon the land at the rate of 

 175 to 350 pounds per acre, either in fall or spring, 

 and ploughed in ; or it may be mixed with guano in 

 the proportions of two of the former to three of the 

 latter ; or it may be mixed and thoroughly incorpo- 

 rated with stable manure. Experiments were tried 

 with it in Waldau, Prussia, in 1864, on a large scale, 

 no less than 500 tons of the manure having been em- 

 ployed, at the rate of 180 to 350 Ibs. to an acre. Fields 

 containing from twenty-five to fifty acres were chosen 

 for the trial : these were manured in the usual manner ; 

 were then divided into equal parts, and the Stassfurt 

 manure added to one of the parts. The greatest pains 

 were taken to give it a fair test, and the following 

 results were obtained. The yield of beets slightly 

 exceeded that on other fields. To give an idea of the 

 astonishing excess of sugar contained in beets pro- 

 duced with the Stassfurt manure, the following table 

 is submitted : 



