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quantities in the Eaft Indies 3 at Madagafcar, 

 Mauritius, Borneo, the Molucca iflands, and 

 on the Egyptian coaft. 



e. Jet is compofed of wood united with the prin- 

 ciple of inflammability. 



f. Coal, compofec} of argillaceous earth, vitri- 

 olic acid, and the principle of inflammability. 



g. Turf, mold impregnated with bitumen, in- 

 terwoven with vegetable roots. 



IY. METALS. 



The mod ponderous of all mineral bodies - 9 

 fufible, but refuming their original properties 

 when cold, even after calcination by the ad- 

 dition of the principle of inflammability. 



A. Gold, when pure, is not fonorous, nineteen 

 times heavier than water, foluble only in aqua 

 regia, and hepar fulphuris, unalterable by fire. 



a. It is moft frequently found pure, in its me- 

 tallic Hate, in thin plates, folid, cryftallifed, or 

 in powder. 



b. It is found in quartz, and in rnarcafite, and 

 fometimes combined with iron, quickfilver, and 

 a mixture of zinc and iron. 



The larger! quantities of gold are brought 

 from the Brazils and the Spanifh Weft Indies. 

 This metal is found alfo in Hungary, Tranfyl- 

 vania, and in many other parts of Europe, in 

 red, yellow, black, or iron-colored fands. It 

 is met with likewife in fome rivers, as the 

 Tagus, Ganges, Rhine, Saale, Niger, Danube, 

 fjfc> called river, wam-gold, or gold-duft. 



B. Silver, when pure, is eleven times heavier 

 than water, foluble jn the nitrous and vitriolic 



f acids, 



