-o A S Y S T E M O F 



d. It is unalterable in air, water, and (ire. 



e. It diilblves in the acid of nitre, and alfo 

 by boiling in the acid of vitriol. 



/. If precipitated out of the acid of nitre 

 with the common fait, or with its acid, ir 

 unites fo ftrongly with this laft acid, that 

 it does not part from it, even in the fire 

 itielf, but melts with it into a mafs like 

 glais, which is called luna cornea. 



g. It does not unite with the femi-metal 

 nickel, during the fufion. 



b. It amalgamates eafily with quickfilver. 



u It is in the dry way difiblved by the liver 

 of fulphur. 



k, It has a ftrong attraction to fulohir*, fo as 

 readily to take a reddifh yellow or black 

 colour, when it is expofed to fulphureous 

 vapours. 



4 It has no attraction to arfcnic •, whence 

 when the red arfenical filver ore, or Roth- 

 gulden Ert% of the Germans, is put into 

 the fire, the arfcnic flies off, and leaves the 

 fulphur (which in this compound was the 

 medium aniens) behind, united with the 

 filver in form of the glafs filver ore, or 

 glafs ertz. 



w* It is not diiTolved by the glafs of lead, 

 and confequently it remains on the cuppel. 



v. It is exhaled or carried off bv volatile me- 

 tals and acids, as by the vapours of anti- 

 mony, zink, and the acid of common 



fekj ' 



o. It melts eafler than copper. 



S E C T. 



