t 56 ] 



a. Galena plumbl, potter's lead ore, or lead ore, 

 or lead glance, mineralized with fulphur, and 

 a little nlver, is a rich ore of lead, compofed 

 of flat planes, with cubic angles. 



b. Antimoniated lead ore, or lead trail, mine- 

 ralized with fulphur and filver antimony, hav- 

 ing irregular ftrias, or radiated lines. 



C. Lead cryftals, " Diaphanous, prifmatical or 

 pyramidal, moftly hexagonal," white, green, or 

 yellow. 



d. Lead fpar, " White or grey, often yellowifh, 

 without the lead metallic appearance." 



e. Lead ochre, or native cerufla. " A white 

 powder fometimes found on the furface of lead 



glance." 



G. Quicksilver, or mercury, is a fluid 

 metallic fubftance, fourteen times heavier than 

 water, eafily divifible, and evaporates in a heat 

 below ignition, or before it becomes red hot. 



a. Sometimes it is found in a pure Hate, called 

 virgin mercury, but this happens very rarely. 



b. It is chiefly procured in an ore united with 

 fulphur, called cinnabar, of a red color, and brittle; 

 fometimes combined with fulphur and copper, 

 6f a dark grey color, and brittle glaffy texture. 



Cinnabar is found in Hungary, Tranfylvania, 

 Carinthia, Bohemia, the Palatinate, France, 

 Spain, Sweden, and probably in the Eafl Indies 

 and Japan. 



H. Antimony is the metallic mineral, and the 

 metal feparated is called regulus of antimony 

 is a femi-metal of a filver color, confirming of 

 brittle mining planes, above feven times hea- 

 vier than water, foluble in aqua regia, and in 

 fpirit of fait. 



a. Native, 



