314 Proceedings of the Asiatic Society. [No. 3. 



When breathed upon, the smell is that of a foul chimney. 



Sp. gravity of a specimen of the massive kind, 1 ,02 



Of a specimen which was partly massive and partly con- 

 cretionary, 1 .03 



The constituents of a specimen which was composed of a fair average of 

 the massive and concretionary parts were found to be as follows. In 

 100 parts, 



Water, 10.50 



Yolatile bituminous matter, 27.00 



Carbon, 58.00 



Ash, of a dark grey color and effervescing with Acids, . . . 4.00 



100.00 



A portion of the ash was evidently in coarse siliceous granules, probably 

 from the external coating of the rolled pieces ; so that, the true proportion 

 of ash would probably be about 3.50 per cent, or less. 



If found in sufficient quantities this coal would afford a very valuable 

 and agreeable fuel, but would burn too quick, I should think, to be econo- 

 mical ; the powder in the crucible does not coke as that of the bituminous 

 coals often does. 



Postscript. — When about to despatch this report, I received from Dr. 

 Campbell a farther supply of the coal, of which the examination quite con- 

 firms it. In the larger and more massive pieces, the concretionary struc- 

 ture is clearly visible on the cross fracture, and they have moreover 

 embedded in them some brown amygdaloidal concretions from one to two 

 inches long which are masses of micaceous gravel and carbonaceous matter, 

 cemented to some hardness by a mixture of carbonate of lime. There are 

 some pieces also of the coal veined with carbonate of lime. The quantity 

 of coal to be obtained and the expense of raising and delivering it at the 

 station, are now all that is wanted to be known regarding this deposit. 

 It cokes into a bright shining metallic coke externally which is remark- 

 ably fibrous and wood-like ; and in some pieces divides into laminar masses 

 like wood, as if this Jet Coal was produced not from carbonized plants, but 

 from wood. 



Dr. Campbell has also sent us specimens of the rock in which the Jet 

 Coal is found. This is a coarse sandstone grit ; much of the character of 

 those of the true coal formations, and is so far promising ; but it contains 

 no organic remains. 



H. PlDDINGTON, 



Curator, Mus. Econ. Geology. 



