292 



PROCEEDINGS OF THE AMERICAN ACADEMY 



baric carbonate. It separated after concentratiou on the water-bath in 

 prismatic crystals, which were less soluble in cold than in hot water. 



I. 1.3022 grra. of the air-dried salt lost at 80° 0.11 G2 grm. 11,0. 

 II. 1.2529 grm. of the air-dried salt lost at 80° 0.1046 grm. H.O. 

 III. 0.5757 grm. of the anhydrous salt gave 0.2353 grm. BuSO^. 



11,0 



6a 



Calculated for 

 BaCCaCljBrO.,). . 3 HjO. 



8.58 



Calculated for 

 BalCjCljBrOala- 



23.82 



Found. 



I. 



8.53 



II. 

 8.35 



III. 

 24.03 



Calcic ^-Bromdicliloracrylate, Ca(C3Cl2Br0.2)2 . 3 11,0. — The cal- 

 cium salt separated in the form of rhombic plates sparingly soluble in 

 cold water, when an aqueous solution of the acid was neutralized with 

 calcic carbonate and concentrated on the water-bath. For analysis it 

 was dried first at a constant weight in the air, then at 80°. 



I. 1.2318 grm. of the salt gave 0.1195 grm. H^ at 80°. 

 II. 1.1054 grm. of the salt gave 0.1088 grm. II.O at 80°. 

 III. 0.9719 grm. of the anhydrous salt gave 0.2741 grm. CaSO^. 



H,0 



Ca 



Calculated for 

 CaCCaCLBrO,). . 3 n.fi. 



10.15 



Calculated for 

 Ca{C3CljBr02)2. 



8.37 



Found. 

 I. II. 



9.71 9.85 



m. 

 8.29 



Potassic ^-Bromdichloracrylate, KCgCUBrOo. — The potassium salt 

 was prepared by neutralization of the acid with potassic carbonate. 

 After concentrating the solution the salt separated in minute prismatic 

 crystals, which were very soluble in water. "When dried to a constant 

 weight in the air, it lost nothing at 80°. 



1.2362 grm. of the salt dried at 80° gave 0.4144 grm. K^SO^. 



K 



Calculated for KCsCLBrOj 



15.15 



Found. 



15.03 



Argentic ^-Bromdichloracrijlate, AgCgCl^BrO.,. — The silver salt was 

 thrown down as a flocculent precipitate upon the addition of argentic 

 nitrate to an aqueous solution of the acid. This salt is permanent in 

 ordinary daylight, and it can be recrystallized from hot water without 



