MODE II. ANTHRACITE. 557 



" Anthracite is often found in primitive re- 

 gions, which is a remarkable circumstance in a 

 combustible which seems so nearly allied to coal. 

 It generally is found in mica-slate, and even 

 gneiss; it is sometimes in beds, sometimes in 

 veins. Its layers are often winding and con- 

 torted, like those of the rocks with which it 

 alternates. 



c( Dolomieu saw anthracite in veins, in the 

 porphy ritic mountains near Chapelle, department 

 of Saone and Loire. In the Tarentaise of Savoy, 

 it contains 0,72 of carbon, 0,13 of silex, 0,03 

 of argil, 0,03 of iron, and 0,08 of water. Primi- 

 tive anthracite is found in Piedmont, at the foot 

 of little St. Bernard. In the department of 

 Isere, in lumps or heaps, in the midst of a pud- 

 ding-stone, composed of primitive rock, and 

 without any vestige of organised bodies. At 

 Musy, near Clayte, in the former Charolais. 

 At St. Simphorien de Laie, in the environs of 

 Roanne. At Diablerets, in Valais. 



" M. Ramond has mentioned an interesting 

 variety, which he found at the bottom of the 

 valley of Heas, the upland of Troumose, depart- 

 ment of Upper Pyrenees, in the midst of mica- 

 slate. This anthracite disposed in veins, only 

 contains carbon, mixed with a small quantity of 

 silex and argil, there not being any iron. This 



