534 Proceedings of the Royal Irish Academy, 



tMs is an extremely fine coal, quite equal, if not even superior, to the 

 Creenagh. cannel. 



Ash, 4'06 per cent. 



Specific gravity, . . 1-232 



It is rare to find a cannel coal with such a small percentage of ash. 



ISText in succession comes the Brackaville coal, the Shining seam, 

 and the Bone coal."^'' Those I could not obtain specimens of, as the two 

 former were not being worked when I was in the district ; the last 

 coal I saw in a new pit, on old workings, and it may give some idea of 

 the expensive style of mining there when I mention that a fortnight 

 after the pit-men opened it, it was found untenable on account of the 

 water fi'om the old workings, and other causes. As I had deferred 

 collecting specimens until the solid coal should be reached, I was dis- 

 appointed in obtaining any. The seam is 2'6" to 3' thick. 



A few yards above this lies the Annagher coal. This seam is in 

 most places 9 feet thick, and is an extremely fine bed ; a soft, rich, 

 black coal, full of gas, containing a mere trifle of ash, and but little 

 sulphur. It is very diificult to work on account of its having a very 

 thick bed of soft fire-clay for a seat. This often swells up, and makes 

 the levels quite impassable. 



The samples from which the analyses were made were obtained at a 

 small " Gin Pit," sunk on the outcrop of the coal in Annagher. The 

 pit was only 14 yards deep, and mostly in drift. 



Xo. 8 . — Annayher Coal. Prom a small pit in Brackaville. 



AXAXTSIS. 



Volatile matter, including sulphur and water, . 45-62 



p -, \ Fixed carbon, 52-46 



^^^^' (Ash, 1-92 



100-00 



Water at 212° F., 9-89 f per cent. 

 Sulphui', . . . 2-56 ,, 

 Ash in coke, . . 3-55 

 Specific gravity, . 1-250 



Hea-Tixg Power: — 1 lb. of the coal evaporates 12-48 lbs. of water 

 at 212° F.; and one cubic foot of the coal evaporates 967-20 lbs. of 

 water at 212° F. 



The above analyses will give a very fail' idea of the character of the 

 coals in the Dungannon Coal Field ; and it will be seen that 

 many of these will bear favourable comparison with the best 



* Could this name be merely the French Bon ? It is not improbable that the 

 name may have been appUed by Ducart, an Italian engineer, who worked these 

 mines 100 years ago, especially as it is a coal of superior quality. 



