/. McC. Meadows — On the Leinster Coal-field. 101 



ings already mentioned, its extension and continuation under the 

 whole area that was once underlaid by the three-feet seam, may be 

 said to be now well established. The Jarrow seam is, in fact, the 

 first workable bed of Coal which is met with below that seam. 



Some of the borings that have proved this seam were made through 

 pits in which the three-feet Coal had been worked. The thickness 

 of strata between both seams may vary from seventy to eighty yards. 



When it is borne in mind that there has not been as yet any work- 

 ing upon the Jarrow seam at any point under the three feet seam, 

 and that such workings as have been made upon it are all of them 

 outside of the croppings or outgoings of that seam, it becomes 

 evident that the Jarrow seam is likely to prove a principal source of 

 supply of Coal in the future working of the field. 



When circumstances shall call for a large development of its 

 coal resources, the first step for that purpose will be taken when 

 sinkings shall be made to the Jarrow seam through some of the 

 deep portions of the principal basin of the three-feet seam. 



In addition to the workings already referred to, the Jarrow Goal 

 was, for some time, worked at Massford, and it is at present worked 

 at The Eock Colliery, both near Castlecomer. More than eighty 

 years ago its outgoing was discovered eastward of the Doonane 

 portion of the three-feet seam, and some workings were then made 

 upon it, and within the last twelve years at the Geneva Colliery, 

 near Crettyard. 



Its extension into Clough, the estate of George Leopold Bryan, 

 Esq., M.P., was ascertained by the position and lie of the seam in 

 the No. 2 Jarrow Pit, and works are in progress, and a shaft is 

 now being sunk to that seam upon the Clough royalty, jj 



At Monteen, upon the eastern side of the field, workings have 

 been for some time and are at present cari'ied on upon the Jarrow 

 seam ; but here it has been found upon the average to be not much 

 more than from two feet to two feet four inches in thickness. 



At the Hollypark Colliery, in the Queen's county, it has also been 

 worked upon its northern verge or outgoing, outside of the outcrop 

 of the three-feet seam of the Newtown basin. These works are in 

 operation at present ; but in this instance that Coal, as far as it has 

 been as yet wrought, belongs to the class of a thin seam. 



Upon the west, the Jarrow seam has been partially worked upon 

 its verge or outcrop at the Broompark and Eiesk Collieries, with a 

 thickness of about eighteen inches ; but whether in the condition of 

 a thick or a thin seam, it generally retains the character of a strong 

 useful goal. It may be worth remark, that wherever this seam has been 

 found to approach the surface, its condition has been that of a thin 

 seam of Coal, usually of workable thickness. 



Loicer Seams and Exterior of the Coal-field. 



To ascertain what workable seams of Coal lie below the Jarrow 

 seam, a useful point for observation will be found anywhere at the 

 Newtown basin of the three-feet seam. There in its best condition 

 a tract of that seam once lay, and if a line of section be now taken 



