[136 ] 



CLASS III. 



M £ T A L S. 



r T^HE moft ponderous of all mineral bodies, 

 * fufible, but refuming their original proper- 

 ties when cold, even after calcination, by the ad- 

 dition of inflammable matter, or oxygen gas : in 

 their pureft metallic ftate, they poffefs neither 

 tafte nor fmelL There are 23 metals with which 

 we are acquainted, of thefe 8 are confidered 

 as du&ile, or entire metals; and 15 as fragile 

 or femi-metals ; of the former are, 1. Platina. 2. 

 Gold. 3. Quickfilver or Mercury. 4. Silver. 

 5. Lead. 6. Copper. 7. Iron. 8. Tin. Of 

 the fragile are, 1. Eifmuth. 2. Nickel. 3. Arfe- 

 nic. 4. Cobalt. 5. Zinc. 6. Antimony. 7. 

 Manganefe. 8. Scheele, Wolfram, or Tungften. 

 9. Uranite. 10. Molybdena. 11, Menacha- 

 nite. 12. Sylvanite. 13. Titanite. 14. Chrome. 

 15. Tellurium. 



From recent experiments made on the Carbo- 

 nates of Barytes, Magnefia, and Chalk, three new 

 metals are fuppofed to exift, which Mr. Tondi, 

 the difcoverer, has named B arhonum> Austrum^ 

 and Parthenum ; for which Mr. Kerr would fub- 

 ftitute the names of Barytum, Magnesium* and 



Calcum} 



