OF ARTS AND SCIENCES. 89 



standing, and was purified by crystallization from ether or ligroine. It 

 was dried in vacuo and analyzed. 



0.24G0 g. of substance gave, by the method of Carius, 0.3000 g. of 

 the mixture of argentic chloride and argentic bromide, and 0.2028 g. 

 of baric sulphate. 



It crystallizes in small white prisms with a peculiar smell, similar 

 to that of parabrombenzylbromide ; but when cold it does not attack 

 the mucous membrane, and when warmed only in a very much less 

 degree than any of the brombenzylbromides. It melts at 115°, is 

 essentially insoluble in water, and but slightly soluble in cold alco- 

 hol, ligroine, carbonic disulphide, and glacial acetic acid, freely soluble 

 in all these solvents when hot, and in benzol and ether even in the cold. 



Parabrombenzylsulphide, (CgH^BrCH^) S. 



This substance was made by boiling parabrombenzylbromide with 

 an alcoholic solution of sodic sulphide ; the reaction takes place very 

 easily. The product obtained by distilling off part of the alcohol and 

 precipitating with water was purified by crystallization from alcohol. 

 Dried in vacuo it gave the following results on analysis : — 



I. 0.1768 g. of substance gave, according to Carius, 0.1780 g. of 

 argentic bromide. 



II. 0.1807 g. gave 0.1828 g. of argentic bromide and 0.1057 g. of 

 baric sulphate. 



III. 0.2284 g. gave 0.1368 g. of baric sulphate. 



III. 



8.23 



Properties. — It ciystallizes in large thin plates, apparently rhombic 

 crystals, which have a tendency to turn brown in the air ; the odor is 

 aromatic, and not especially disagreeable ; it melts at 58°- 59°; is essen- 

 tially insoluble in water, soluble with difficulty in cold alcohol, ligroine, 

 or glacial acetic acid, but freely in each of these solvents when hot, 

 and in ether, benzol, or carbonic disulphide. 



