90 
THE GEOLOGIST. 
gowlan, and its proximity to that of Greoglinaslieve, it is evident that 
the whole of this coal-bearing area should be worked from the 
northern side of the mountain. I believe that the quality of the 
Greaghnaslieve coal is the same as that from the Seltanaveeny Pits. 
3. The Seltanaveeny Coal-field. — Extensive operations have been 
carried on here for many years back in the northern part of this 
townlaiid, adjoining that of Tullynahaw, and shafts to the depth of 120 
feet have been sunk in the coal ; from the comparatively low position 
of this ground and the fact that this portion of the coal-field is formed 
by the stream S.E. end of the Altagowlan basin, and the coal at its 
outcrop dips to the hill in every direction, great difficulty will ever be 
experienced in freeing the workings of water. (See map.) 
The distance to the lake from those pits is four miles, by the new 
road to Greaghnaslieve, or two and half by the old and at present 
broken-up road leading from Tullyualiaw colliery. 
The subjoined is my estimate of — 
THE THICKNESS, AREA, AND WEIGHT OF COALS IN THE FOLLOW- 
ING TOAVNLANDS, FORMING PORTION OF THE ARIGNA COAL- 
FIELDS, COUNTY ROSCOMMON. 
TOWNLANDS. 
ft. in. 
Acres. 
Tons. 
North-west Coal-field. 
Greaghnaslieve, lower seam 
Greaghnaslieve, upper seam 
Altagowlan, lower seam 
South-icest Coalfield. 
. f Aghabehy, proved area 
1 1 Aghabehv, unproved area 
^< Tullvtawen, proved area 
[ Rover, partly proved 
South-east Coal-field. 
Carrownanalt 
Derreenavoggy 
Crossbill 
North-east Coal-field. 
Saltanaveeny, available . . 
2 0 
1 9 
2 0 
1 9 
1 6 
1 6 
1 6 
1 6 
1 6 
2 0 
100 
60 
94 
42 
200,000 
95,000 
188,000 
73,500 
296 
556,500 
36 
133 
18 
67 
120 
54,000 
199,000 
27,000 
100,000 
180,000 
468 
561,000 
179 
179,000 
179 
179,000 
72 
144,000 
72 
144,000 
