WITH THE MARINE ACID. 347 



xvi. Corrofivc Sublimate adulterated with Ar- 

 fcnic. 



I HAVE formerly mentioned the adulteration 

 of corrofivc fublimatc with arfenic. Somechc- 

 mifts, however, have denied that thefc two fub- 

 rtanccs can be united by fublimation*. Indeed, if 

 we arc to believe Glaferf and Sperling J, we (hall 

 be pcrfuadcd, that when arfenic is mixed with 

 corrofivc fublimate, and expofcd to the lire, the 

 acid of the arfenic is expelled, and a butter i< 

 formed; the mercury, at the fame time freed 

 from bondage, being rcllored to its metallic 

 itatc. The experiments of Pott $, Gmclin ||, and 

 Spielman ^[, arc in direct oppolition to this opi- 

 nion ; in which the combination of mercury and 

 true arfenic was cilecled. But in order to re- 

 move all doubts on this fubjcdt, I took three 

 parts of corrofivc fublimatc, and two of arfenic, 

 and triturating them both together, put the mix- 

 ture into a retort, and fubjcdled it to a violent 

 heat. At the end of the proccfs there was no 

 appearance of any butter ; but all the matter 



was 



{ Kcuman in pr.rlc&. 



| Cour* tic ChcmiCf 1663. 



$ DifT. dc Arfcnico. 



DC Sale comm. 



|I DifT. dc fpccif. can. fanandi mcthodis, Tubing. 1757. 



f Iuft Chcm, 



