334 Dr. W. A. Tilden and Mr. W. A. Shenstone. [May 7, 



Fiq. 2. 



An attempt was made to ascertain the influence of magnesium 

 chloride. A solution was made by dissolving pure anhydrous chloride 

 of magnesium in water, and the calcium sulphate was digested with 

 this solution at known temperatures. 



Table IV. — Solubility of Calcium Sulphate in solution of Magnesium 

 Chloride at various Temperatures. 



100 parts of water contain 



, ~> \ 



Experiment 1. Experiment 2. 



, , , " x 



Temperature. CaS0 4 . MgCl 2 . CaS0 4 . MgCLj. 



9° .... -765 .... 197 .... 778 .... 19*9 



39 .... 2 744 .... 11 1 .... 2 747 .... not deter. 



80 .... 1-038 .... 9-99 .... 1*038 .... 9 '99 



