22 [May, 1S41. 



In exterior appearance it is nearly related to many of the 

 richest bituminous coals of this country and of Europe. 



It is moderately compact ; thin shining lamina? are seen parallel 

 to the bed or plane of super position, but the greater part of the 

 mass is of a dull or pitchy black colour. 



Its horizontal or depository surfaces are rather uneven ; vertical 

 sections in some p^rts smooth, in others, irregular; very little 

 indication of reediness is perceived. Portions of "clod" or vege- 

 table charcoal are occasionally met with. 



Its specific gravity is 1.324. 

 At a temperature of 300 Fah. it loses of water 2.2 per ct. 



Coked at a bright red heat it gives off of volatile 



matter, burning with a brilliant flame, 27.8 " 



It contains of carbon, not volatile by simple heat, 67.62 " 

 And when fully incinerated, leaves of reddish grey 



ashes 2.33 " 



100. 



On being quickly exposed to a full red heat it becomes com- 

 pletely fused, and the original form and structure are entirely 

 lost. The coke accordingly belongs to that class which has 

 received the designation of "highly bituminous coal coke." 



Carbon, Vol. matter. Ashes. 



In composition this coal bears a strong 

 analogy to the Staffordshire Wed- 

 nesbury coal, which gives (Berthier) 67.5 30. 2.5 



Clyde, near Glasgow, (also examined 



by Berthier) 64.4 31.0 4.6 



Karthaus, (analysed by VV. R. John- 

 son) 68.1 



Vartey, 'three-quarter coal,' (Mushet) 67.9 



Blandare Meadow coal, and at Pont-y- 



Pool, (Mushet) 66.84 



Risea,Big Vein, South Wales (Mushet) 68.016 



Phelps vein, at Mynydyswdyn do. 68.00 



