1838.] Report on specimens of Coal. 851 



bituminous, with dull carbonaceous seams. It burns with much scin- 

 tillation, and poor flame: — specific gravity 1.470 to 1.556 ? 



Composition — Volatile matter, 42.8 



(of which water 7.6) 



Carbon, 47.6 



Earthy residue, ferruginous, 9.6 



100.0 



Specimen 4. — " Coal of Mukud. The locality of this specimen is 

 not well authenticated. The three preceding were dug out, but this 

 was brought in, as was said, from Mukud." 



Highly vitreous jet, of a more resplendent velvet gloss than the 

 foregoing. Seam of carbonate of lime adhering to one corner : burns 

 with richer flame, and slight sparkling: — water given off on sandbath 

 only 2.7 per cent.: — specific gravity 1.122, being the lightest of the 

 series, and approaching closely to pure asphaltum, but it does not fuse, 

 when heated, before ignition, nor is it readily, if at all, soluble in 

 naphtha, even when boiling. 



Composition — Volatile matter, 63.6 



Carbon, 32.8 



Earthy matter, ferruginous, 3,6 



100.0 



Specimen 5. — " Kohdt coal, similar to that sent down in 1833; 

 locality Lachee, Kurpa, Jutta and Ismael Khyl" — B. 



Dull earthy bituminous shale, burns with good flame, and leaves 

 slaty ash. Specific gravity 1.619. The specimen analyzed in 1833 

 (see Journ. As. Soc. vol. II.) had a somewhat higher weight, 1,670. 

 I place the two results side by side, 



1833 Specimen. 8838 Specimen. 



Volatile matter, 37.0 3.04 



Carbon, 6.2 14.9 



Earthy matter, 56.8 54.7 



100.0 100.0 



Specimen 6. — " Coal of Soorkh-ab, 15 miles S. S. E. of the city of 

 Kabul, near Moosye. It is called ' Khur by the learned : there are 

 two kinds as may be seen by the specimens. There are copper mines 

 near it."— B. 



