OP ARTS AND SCIENCES. 325 



I. 0.5579 grin, of air-dried substance lost, at 62-65°, 0.0362 grm. 



HA 

 II. 0.9504 grm. of air-dried substance lost, at 70°, 0.0630 grno. H.p. 

 III. 1.0217 grm. of air-dried substance lost over sulphuric acid 0.0786 

 grm. HgO. 



Anilmucoxybroraic acid crystallizes from water in fine pale yellow 

 needles, which are sparingly soluble in cold water, more readily in hot. 

 On long heating of the aqueous solution decomposition sets in. The 

 acid dissolves readily in alcohol, ether, or in hot chloroform or benzol, 

 in ligroin or carbonic disulphide it is sparingly soluble. From chlo- 

 roform it crystallizes in small compact oblique prisms, which melt, 

 with decomposition, at 131-132°. The acid dissolves readily in solu- 

 tions of the alkaline carbonates, and is reprecipitated unchanged on 

 the addition of acids. With the salts of the heavy metals it gives 

 brilliant yellow insoluble salts, and with ferric chloride it yields a deep 

 brown precipitate. On heating with acids or alkalies, aniline is formed. 

 On titration with baric hydrate two molecules of the acid were found 

 to be neutralized by one molecule of baric hydrate, but salts contain- 

 ing two atoms of silver and potassium could also be prepared. 



Monobaric Anihnucoxyhromate, Ba(CjoH.BrN03)2 \ H^O. — By the 

 action of baric carbonate upon the acid suspended in water, a salt 

 is formed which is somewhat sparingly soluble in hot or cold water. 

 On evaporation of the solution a portion of the salt separates in yellow 

 needles, but decomposition soon ensues. On the addition of baric 

 acetate to the acid neutralized with ammonic hydrate, an amorphous 

 flocculent precipitate was thrown down, which dissolved on heating, 

 and immediately in its place there appeared a highly crystalline bright 

 yellow precipitate. As the solution cooled, still more of the salt 

 separated in felted needles. The air-dried salt apparently contained 

 a half-molecule of crystal water, which it lost at 100°. 



0.5802 grm. of the air-dried salt lost, at 100°, 0.0075 grm. H^O. 



Calculated for Ba . (Ci„H,BrN03)2 J HjO. Found. 



H^O 1.32 ' 1.25 



0.5755 grm. of this salt dried at 100° gave 0.1970 grm. BaSO^. 



Calculated for Ba . (OioHjBrNOalj. Found. 



Ba 20.30 20.12 



