490 Proceedings of the Royal Irish Academy. 



These rocks dip away from Altmore ; but the eurite (No. 2) is 

 probably the representation of the lower eiirite in the Altmore hills, 

 as the section is somewhat similar to that to the westward, as seen at 

 Shane Barnagh's Sentry-box (PL XYI., fig. 4). 



Shane BarnagKs Sentry-hox Section. 



6. Very shaly, purplish to greenish, tuffs and tuffose rocks. 



5. Shaly, purple eurite. 



4. Grreen tuff ; only the weathered outcrop visible. 



3. Bedded eurite ; beds rarely a foot thick. 



2. Conglomerate ; only the weathered outcrop seen. 



1. Slaty eurite or tuff. 



To the S.E., near the Back-bridge, good flags are raised in a por- 

 tion of No. 3, while to the south thereof, nearer the bridge, the rocks 

 belonging to No. 5 are so very shaly that, if found elsewhere, they 

 would probably be classed as ordinary shales. 



The best and most continuous sections are in the country south- 

 ward of Six-mile-Cross. They, however, are unsatisfactory, on ac- 

 count of the numerous faults. The rocks seem to lie in the following 

 order : — 



Section S.E. of Six-mile- Cross. 



6. Conglomerates and other arenaceous rocks. 



5. Green sandstones and shales, with limestones and calcareous 



beds. 



4. Red arenaceous rocks, with a few green beds and subordinate 



limestones. 



3. Fault op the Glashagh (now Dungannon and Omagh Eailway 



valley). 



2. Thick eurite under a limestone (Aghnagiea). 



1. Shales and limestone near the Camowen, probably belonging 

 to the "Pomeroy series." 



The shales and impure limestones (No. 1) probably belong to an 

 outlying exposure of the " Pomeroy series," as previously suggested. 

 The limestone in No. 2 was formerly extensively quarried, but the 

 quarries are now planted by Lord Belmore.^ The limestone and asso- 

 ciated beds (No. 5) in Tandragee are very similar to those in the 

 country N.W. of Ballaghaderreen, hereafter described, but in the Tan- 

 dragee beds fossils have not been found as yet. 



In the country southward of Six-mile-Cross, and in the neighbour- 



^ It is probable that it was from this locality that the fossils were sent to 

 Griffith of which he said, ' ' I got fossils from that country in rock very like the 

 Toormakeady limestone, but never had time to visit the place myself." See Note 

 in Press, page 600. 



