PROCEEDINGS 



OF 



THE ROYAL IRISH ACADEMY. 



1837. No. 4. 



March 16. 

 {Continued from last Number.) 



" On some remarkable Salts, obtained by the action of 

 Ferrocyanide of Potassium on Sulphovinates and Sulpho- 

 methylates." By William Gregory, M.D., F. R. S. E., &c. 



When ferrocyanide of potassium is added to sulphovi- 

 nate of lime, a precipitate appears, which, when heated, 

 gives off hydrocyanic ether. This salt (called a) contains 

 iron, calcium, potassium, cyanogen, and the base of ether. 



The mother liquid is found to contain a salt b, very so- 

 luble in water and alcohol, which, also, on being heated, 

 yields hydrocyanic ether. The ingredients of B are sulphu- 

 ric acid, potash, ether, and cyanogen. 



In order to avoid the confusion which might result from 

 the use of a salt of lime, (as Mosanderhas shown that ferrocy- 

 anide of potassium produces in the salts of lime, generally, 

 a precipitate consisting of iron, calcium, potassium, and 

 cyanogen,) the author next tried sulphovinate of potash. 

 By the action of ferrocyanide of potassium on this salt he 

 got a salt c, corresponding to A, but different ; and another 

 salt d, identical with b. 



When sulphomethylate of lime was employed, two salts 

 e and f were obtained, exactly analogous to a and b : and 

 by employing sulphomethylate of potash he got g, corres- 

 ponding to E, and h, identical with f. 



e 



