OF ARTS AND SCIENCES. 227 



dissolved in washing tlie product of the reaction with water, and this 

 wasli-water was unfortunately lost before it was investigated. 



Parabrombe)izyhulphocija)iate {C^H^Br.CH.,SCN) was obtained by 

 boiling the bromide with alcoholic potassic sulphocyanate, and purifying 

 by crystallizing from alcohol at low temperatures. I have but one 

 imperfect sulphur determination of this substance, but have not thought 

 it of sufficient importance to go through the purification of a fresh 

 quantity, which is rendered difficult by its low melting-point, in order 

 to confirm this result. 



0.2455 gr. of substance gave .2339 gr. of Ba.SO^. 



Required for C^HsBr.SCN. Found. 



Sulphur 14.03 13.08 



Properties. — It forms white ribbons often 5 cm. long, made up of 

 needles united together laterally, having a strong odor similar to that 

 of benzylsulphocyanate, melting at 25*^, and soluble in alcohol. The 

 surprisingly low melting-point rendered the management of the sub- 

 stance very difficult, and preserving the crystals impossible ; it also — as 

 the benzylsulphocyanate melts at 36°-38°, according to Henry ; * at 

 41"^, according to Barbaglia f — throws doubt on the analysis given 

 above, and therefore on the correctness of the formula. 



Tlie investigation of the pai'abrombenzyl compounds will be continued 

 in this laboratory ; the next portion of the subject to be studied being 

 the action of heat, superheated steam, and sodium on these bodies. 



* Henry, Ber. D. Cli. G., 1869, p. 637. 

 X Barbaglia, Ber. D. Ch. G , 1872, p. 687. 



