Fossil*. 



ern discovery, and of a particular kind, 

 whose calx or oxyd is of a yellow colour, 

 and one of the constituent parts of the fos- 

 sil, called tungsten. 



Another distinct metallic substance on- 

 ly a few years since discovered by Klap- 

 roth, is the Uranium. The oxyd of u- 

 ranium has a lemon-yellow colour, is fix- 

 ed in fire, and infusible when alone. Ig- 

 nition changes its colour to a brownish 

 grey. 



We are likewise indebted to Klaproth 

 for the discovery of the new metal called 

 by him Titanium or Titanite. It is con- 

 tained in the mineral called red shoerl as 

 a native oxyd. The colour of the perfect 

 oxyd of titanium is red ; but when kept 

 In violent ignition upon coals, and by a 

 greater degree of disoxydation, it gradu- 

 ally assumes a yellowish, bluish, and 

 blackish hue. 



Tellurium is a metal of a white colour 

 like tin, inclining to lead-grey. It is brittle 

 and friable ; possesses a lamellar texture, 

 and considerable metallic lustre ; is one 

 of the most easily fusible metals, and ex- 

 hibits a crystallized surface when slowly 

 cooling after fusion.- Its specific gravity 

 is 6,1 15. 



