KiNAHAN — On the Leinster and Tqjpemry Coal Seams. 365 



be to some extent uncertain ; but the soundness of his views seems 

 to be more or less proved from the subsequent researches by his 

 assistant, Captain Sutcliife. The latter investigator has carefully- 

 compared the measure passed through in the sinking of the new 

 Modubeagh pit with those of the adjoining collieries; and from 

 these comparisons he came to the conclusion that the trial at Mayo 

 was in the same measures as those .at Modubeagh. If this sugges- 

 tion proves correct^ the great problem of the field is solved, and 

 the measures ought to occur in an order similar to that given in 

 Section 2, Plate XIV. 



The reasons for Sutcliffe's supposition are as follow : — In the 

 Modubeagh pit there is, at 50 yards (150 feet) from the surface, 

 the Groio coal ; while 70 yards (210 feet) lower down, or 120 yards 

 from the surface, is the Foul coal (called in the adjoining collieries 

 Ward's Seam), the " Main coal " being 48 yards (144 feet) lower, 

 or 168 yards from surface. In the Mayo trial a Crow coal was cut 

 at about 18 yards (55 feet) from the surface, and at about 61 yards 

 (183 feet) deeper a second. The latter coal is not exactly similar 

 to the Foul coal or Ward's Seam, or at the same depth below the 

 Croiv coal ; but the associated measures above^ and below it, as far 

 as proved, are very similar to those in the Rushes and Modubeagh 

 pits ; on which account Captain Sutcliife considers the coals to be 

 the same. As already mentioned, there is, according to Popping 

 and Edge's section, a Crow coal, about 93 yards (279 feet) below 

 the One-foot coal, with which occurs the Jarrow Channel, a Croiv coal, 

 the measures above and below which are more or less similar to 

 those associated with the Upper coal in the Mayo trial, and those 

 in connexion with the Modubeagh Crotv coal, which has led Captain 

 Sutcliife to consider that in these sections there is found the 

 representatives of one and the same coal (Modubeagh Croio coal) . 

 The comparison between these diiferent sections appears to afford 

 good presumptive evidence that the calculations of Messrs. Meadows 

 ;ind Sutcliife are correct ; the main or profitable coal {Rushes coal) 

 (if the measures in the eastern division of the field lying about 209 



1 Mr. B. B. Edge points out "if the small coal in the Mayo pit is the representation 

 of the Modubeagh Crow coal, there can be only 180 feet between it and JFa?-d's Seam, 

 and not 210 feet, as in Modubeagh." 



" In the Modubeagh pit there was a bed of fire-clay 21 feet over the Crow coil, 

 ■sihile in the Mayo trial there is one 13 feet above the thin coal. 



