28 § 
Mr. Weaver on the 
and parallel slip takes place about one thousand yards more to the 
eastward. And about eight hundred yards beyond this slip, the 
north-eastern termination of the Goalbrook trough has been found, 
and coal raised from the outcrops. These slips are vertical fissures, 
from one and a half to three inches wide, occupied by clay and a 
leader of coal. 
§ 189. Traces of coal have been found also as far as Tullyroan 
on the north-east, about seven miles from Coalbrook ; but this 
quarter has not been properly explored. The principal workings 
for coal have been carried on in a superficial manner, at different 
intervals, between Coalbrook on the north-east, and Killenaule on 
the south-west, a distance of about five miles; beyond which no 
colliery has been worked. In this quarter also, smaller basins have 
occurred in a few instances, included within the larger ; a second 
and upper seam of coal and concomitant beds having been found 
above the lower. At present little is doing in any part of the district, 
except on Mr. Langley’s estate of Lisnamrock. This field compre- 
hends between four and five hundred acres of coal, the merchantable 
produce of which would probably exceed one million of tons of coal 
and culm ; an estimate, independent of what might be derived from 
the workable seam subjacent to that of Coalbrook, or from the coal 
situated in another estate, lying more to the south-east. It is to be 
hoped that the spirited proprietor may be enabled to embark a capital 
sufficient to work his collieries on a scale of magnitude, that would 
probably be conducive, not more to his own advantage, than to that 
of the community in general. 
§ 190. In the section which I have given PI. 14, No. 4., I have 
inserted only the principal and well known upper seams of the succes- 
sive coal troughs, neglecting the subjacent, as the continuity of the 
latter throughout the field has not yet been proved, nor have their 
