DU FOYER — BITUMINOUS COAL OF THE ARIGNA DISTRICT. 87 
I traced the outcrop of the two coal-beds around the entire north- 
ern, eastern, and southern limit of Kilronan Mount ; devoting ray 
attention specially to tliose which appear in the townlands of x\ghabehy, 
Tullytawen, and Rover, and in those of Carrownaualt, Derreenavoggy, 
and Cross Hill, on the eastern brow of the mountain. On the other 
side of the Arigna valley I examined particularly the coal "crops" in 
the townlands of Greghnaslieve, Tullytawen, and Seltennaveeny, 
without however having had time to connect them accurately over 
the intervening spaces. Their position as indicated on the map, and the 
faults disturbing them, will not, however, be very far from the truth. 
The following observations are extracted from my field notes : — 
1. The Agliabehy Coal-field. — This lies on the northern slope of 
Kilronan mountain, at an elevation of 510 to 899 feet above the level 
of Lough Allen, from which it is distant about six miles by the 
road ; there is here but one bed of workable coal, called " the top coal,'* 
1 foot 6 inches in thickness, which includes 6 to 8 inches for holing. 
The roof of this coal is slate, and the floor sandstone. The second, or 
lower coal, or " crow coal," is separated from the first by 20 to 55 
feet of very hard sandstone ; it has a thin fire-clay seat with a sand- 
stone or "rock" roof; and is 6 to 8 inches thick, it is full of thin 
seams of earth, and yields only culm of an inferior quality. The 
culm derived from the " holings "* of the top seam is very superior, 
and cokes well. Blocks of a light, flaky, and glistening coal, measuring 
8 to 10^ iuches in thickness, are now being delivered at the pit-mouth, 
at the cost of 55, 6c?. a ton, including the culm ; a ready sale is efl'ected 
for this at 10s. per ton for thick and screened coal, and 8*. per ton for 
the culm, giving however to every ton of culm 4 cwt. of the thick 
coal. When struck with the hammer, I remarked tliat these blocks of 
coal shivered throughout their bulk, which induced me to suppose that 
they would not bear any rough treatment in their transit over long 
distances. 
From the northern outcrop of the " top coal " in the N.W. portion 
of the townland of Aghabehy, and at the stream near the road, a fault 
has been proved, causing a downthrow to the west of about 100 feet ; 
it strikes from this point South by Fast to the shafts near the top of 
the hill, a distance of about 850 yards, or half a mile. From this 
point I believe it strikes S.S.E. into the adjoining lowland of Tully- 
* The term " holing " is applied to that portion of the bottom of the coal-seam which, 
in the absence of a Fire clay " seat," is picked away by the miner in order to extract the 
coal above in blocks. In this instance, the refuse makes excellent culm. 
