286 SOILS AND MANUEES 



proportion. From 1 to 2 cwts. of sulphate or muriate 

 would contain about the same quantity of potash. These 

 manures may be applied either at the back end of the 

 year or in the spring. Though soluble in water they 

 are not very liable to loss by drainage. If kept until 

 the spring they should be put on as early as possible 

 say about the same time as basic slag in order to allow 

 of their becoming thoroughly mixed with the soil. They 

 may be mixed with any of the nitrogenous manures or with 

 superphosphate. They may also be mixed with basic 

 slag just before application, but the mixture should not 

 be allowed to stand. It is better not to mix them. 



