366 Scientific Proceedings, Royal Dublin Society. 



yards (627 feet) to 216 yards below the One-foot coal [Jarrow 

 Channel) of the central division. At the same time this has not 

 heen positively proved ; but a continuation of the Mayo trial to a 

 further depth of about 25 to 35 yards (75 to 105 feet) ought to 

 settle the question. 



Near Castlecomer Cottage, in the lane leading to the sandstone 

 quarry, there is a hard, grey, calcareous shale containing Lower 

 Carboniferous fossils. If Sutcliffe's classification is correct, this 

 should be found in the measures in the Modubeagh pits and the 

 Mayo trial. But after minute inquiry I cannot find that any beds 

 like it have been observed at either of those places. 



GrENERAL Section (Captains Sutcliffe and Meadov^s). 



Peacock or Surface coal, with 12 feet drift over it : 



Strata, about 45 feet = 15 yards. 



Stony coal : 



Strata, „ 21 „ = 7 „ 



Double seam : 



Strata, „ 111 „ = 37 „ 



Old Colliery Three-foot coal : 



Strata with " Crow Coal " about \ 

 45 feet below Three-foot, . . ) " " " " 



One-foot coal with Jarroiv Channel : 



Strata, „ 279 „ = 93 „ 



Crow coal, Modubeagh : 



Strata, „ 204 „ = 68 „ 



Ward's seam, or Foul coal : 



Strata, „ 144 „ = 48 „ 



Bushes, or Modubeagh coal : 



Strata, 180 feet to 210 „ = 60 to 70 



Kingscote, or Bullring coal : 



Strata, „ 300 „ = 100 „ 



Gale Hill coal : 



Middle measures, „ 800 „ 



Lower measures, ,, 500 „ 



Carboniferous limestone, 



The second, or Loiver Toivlerton coal, mentioned in my " Greology 

 of Ireland," does not appear to be satisfactorily understood. To the 



