D1SC0VEHY OF COAL* 
147 
bins a great deal of inflammable and bituminous matter'—the bi¬ 
tumen bubbling out and giving a jet of flame. It burns with a 
bright yellowish flame, emitting much black smoke and decrepi¬ 
tating a little during the process of cousuming. It leaves a dark 
coloured light cinder, forming but a small part of the original bulk. 
In this residuum there is a good deal of oxide of iron, which I 
attribute to the silvery looking film of what may be sulphuret of 
iron, which is interpersed, but apparently sparingly, throughout the 
mass. This film is mixed with about perhaps one half its bulk 
of aluminef There does not appear to be much sulphur in this 
coal, if one may judge by the weak fumes of that substance dis¬ 
engaged during combustion. 
Although this coal lies about thirty miles further south than the 
Trang coast coal [or S. Kamuning rather] above noticed, I am strong¬ 
ly tempted to consider them as belonging to the same coal field. 
Cannel coal, observes Mr. Phillips in bis Mineralogy, is usually 
found in the upper beds of the coal deposits in England fa). But 
it remains to be shewn that the analogy holds good in these far 
separated regions. Even should such an analogy exist, it is not 
likely to be soon proved, because the cost of raising the, perhaps 
very deeply lying, substrata of common coal, would prevent its 
being worked at reasonable cost. It is even doubtful whether this 
last remark may not be found applicable to some of the outcrop¬ 
ping coals already discovered, because much will depend on the 
position of the strata and other circumstances. 
JW 3 . 
I obtained specimens of this coal many years ago, and I be¬ 
lieve the person who gave it io me is dead,—at any rate 
be is not to be found, and I have unluckily forgotten the exact 
locality, although sufficiently aware that it was procured some¬ 
where in the vicinity of the Tama or Trying coals. 
I made a few experiments with this coal in a Chinese forge 
at my residence. It seems to me in some respects to partake, 
of the properties of a slaty authracite. It is rather difficult to 
ignite, but when once ignited, it gives out a very considerable 
M p. 278, 
U 
