Manures and Manuring 165 



altogether, owing to chemical changes taking place. The following hints 

 as to the manures that may or may not be mixed with each other may 

 be useful: 



Farmyard or stable many/re should not be mixed with lime, because 

 the lime drives off the ammonia gas into the air and thus causes it to 

 be lost. 



Nitrate of soda should not be mixed (except in small quantities) with 

 superphosphate, as the sulphuric acid in the latter sets free nitric acid 

 in the form of poisonous fumes, and the nitrogen is lost. 



Sulphate of amTnonia should not be mixed with basic slag or nitrolim, 

 because the free lime in these manures would drive off the ammonia gas, 

 and, if in an enclosed place, is so overpowering as to be dangerous. 



The following mixtures may be made with safety: 



Sulphate of ammonia with superphosphate, dissolved bones, fish guano, and 

 potash salts. 



Nitrate of soda with basic slag, nitrolim, meat meal, kainit. 



Kainit or muriate of potash may be mixed with superphosphate, although 

 a little hydrochloric acid may be given off in fumes. [j. W.] 



