E 3 



it, by the alkali uniting with the acid, when it 

 falls down combined with the fulphur ; lead, 

 iron, and filver precipitate it of a deep and dull 

 purple colour ; copper andiron throw it down in 

 it's metallic Hate. A plate of tin immerfed in % 

 folution of gold, affords a purple powder, called 

 the purple powder of Caffius, which is ufed to 

 paint in enamel. Molt metals unite with gold in 

 fufion, hence it is generally found alloyed with 

 filver, copper, iron, or other metals. 



a. Native Gold-, found in it's metallic ftate, 

 cryftallized with filver, copper, or iron. 



b. Grey Ore ; combined with fulphur, antimo- 

 ny, arfenic, lead, iron, and filver. Born. 



c. White Ore ; combined with filver, bifmuth^ 

 and fulphur. 



The largeft quantities of gold are brought from; 

 the Brazils and the Spanifh Weft Indies. This 

 metal is found alfo in Hungary, Tranfylvania, and 

 in many other parts of Europe, in red, yellow, 

 black, or iron-coloured fands; it is met with 

 likewife in fome rivers, as the Tagtis, Ganges, 

 Rhine, Saale, Niger, Danube, &c. called river, 

 wafh-gold, or gold- du ft. 



C. QUICKSILVER. 



QUICKSILVER, or Mercury ; the moft fluid 

 of all metals, not taking a folid Rate until copied 



to 



