THEORY OF DEPOSITION OF POTASH SALTS 



513 



peated four times. In this case, however, in three of the quad- 

 rants a complication arises from the existence of an interme- 

 diate compound. Between A, saturation with potassium chlorid, 

 and D, saturation with potassium sulfate, there is only the point 

 !. where the solution is saturated with both. Between A and 



F 



Fig. 45. Graphic Representation of Theory of Crystallization. 



B, however, carnallit (KCl.MgCl 2 .6H 2 O) appears, and thus two 

 determinations are necessary, which have been added at E and F 

 and stand for saturation with carnallit and potassium chlorid in 

 the one case, and the same compound with magnesium chlorid in 



17 



