34 EXPERBIENT STATION. [Jan. 



tion of lime to correct. These disadvautages, together with 

 the cost of the acid, rendered the use of the sulfuric acid in- 

 advisable. 



Kaixit. 



As early as 1800 kainit was recommended as a desirable 

 material for the preservation of manure ; it was supposed that 

 the sulfate of magnesia in this salt would act even better than 

 the gypsum. Ilolderfleiss recommended 5 pounds, and later 

 2 pounds, of kainit to every 100 pounds of manure. Numerous 

 other investigators experimented with the kainit and came to 

 the conclusion that it was of no narticular value for the pur- 

 pose. 



German workers, therefore, have come to the conclusion that 

 there is no economy in attempting to check the loss of nitrogen 

 in manures by chemicals, and advise in their place the fol- 

 lowing simple method of treatment : — 



Halt ihn feucht und tritt ilm feste, 

 Das ist fiir den Mist das beste. 



Keep the manure moist and well packed, 

 That is the best method of preservation. 



