356 PROCEEDINGS OF THE AMERICAN ACADEMY 



V. 1.1645 grm. air-dried salt lost over H^SO^ 0.1003 grm. HgO and 

 at 100° 0.1124 grm. HA 

 VI. 1.3000 grm. air-dried salt lost over HaSO^ 0.1124 grm. HoO and 



I. 0.7484 grm. substance dried at 120° gave 0.3038 grm. BaSO^. 



IT. 0.6247 grm. substance dried at 100° gave 0.2521 grm. BaSO^. 



in. 0.6497 grm. substance dried at 100° gave 0.2634 grm. BaSO^. 



Ba 



The solubility of the salt in water at 19°.5 was determined in the 

 usual way. 



I. 41.4499 grm. solution saturated at 19°. 5 gave 0.0470 grm. BaSO^. 

 II. 44.9822 grm, solution saturated at 19°.5 gave 0.0500 grm. BaSO^. 



The solution saturated at 19°, 5 therefore contained the following 

 percentages of anhydrous salt : — 



I. II. 



0.27 0.27 



Calcic TricJilorpyromucate^ Ca(C5Cl303)., . 4 H.^O. — The calcium 

 salt was prepared by precipitating a dilute solution of the ammonium 

 salt with calcic chloride. The precipitated salt was then crystallized 

 from hot water, and proved to be sparingly soluble in hot water, still 

 less soluble in cold water, and separated from a hot solution in irreg- 

 ular aggregations of small leafy plates. 



The salt is permanent in the air, effloresces over sulphuric acid, and 

 loses all its water at 110°. 



I. 1.3008 grm. air-dried salt lost at 110° 0.1697 grm. HgO. 



II. 1.8389 grm. air-dried salt lost at 110° 0.2417 grm. H^ 



Calculated for Found. 



(C5Cl303),Ca . 4 HjO. . I. II. 



H2O 13.30 13.05 13.14 



I, 0.6399 grm. salt dried at 110° gave 0.1855 grm. CaSO^. 

 II. 0.6974 grm. salt dried at 110° gave 0.2019 grm. CaSO^. 



Calculated for Found. 



Ca(C5Cl303)2. I. n. 



Ca 8.53 8.53 8.51 



