84 Correspondence, 



IV. — January &, 1866, — The following papers were read r— - 

 "Notice of a Submarine Forest-bed at Kbos, near Colwyn, North 

 Wales." By Mr. H. F. Hall, F.G.S.— " Introductory Remarks on 

 tlie Geology of tie Country between tbe Vale of Clwyd and the 

 River Dee." By Mr. G. H. Morton, F.G.S. 



This communication was but an introduction to the subject, which 

 is now engaging the author's attention. The physical features, 

 formations developed, and mineral resources of the district were 

 referred to ; but the chief interest was stated to arise from the great 

 development of the Coal-measures to the N.E. of the Mountain 

 Limestone ridge along the Dee, while to the S.W. they are absent 

 altogether, the Limestone resting upon Silurian rocks. With regard 

 to the Mountain Limestone of the Vale of Clwyd, the author was 

 satisfied that it suffered great denudation before the Permian and 

 Triassic rocks were deposited. In the neighbourhood of Holywell, 

 the upper beds of the Limestone are mostly black ; but at the depth 

 of 500 feet from the summit, the adits of a mine are driven through 

 white Limestone, which lower strata crop out to the surface at 

 Gaerwys, and many patches remain on both sides of the vale of 

 Clwyd : that the upper dark portion has been denuded is the only 

 reasonable conclusion that any geologist can arrive at. The author 

 concluded by advising the members of the society to examine this 

 very instructive district so near home, and replete with such great 

 interest. 



COS-K-ZBSIPOITnDEITOE. 



THE RECENT DISCOVERY OF FOSSIL REPTILES IN THE COAL OF 

 THE SOUTH OF IRELAND. 



To the Editor of the Gteologioal Magazine. 



SiK, — It would appear from Mr. Etheridge's notice of the discovery 

 of Labyrinthodont Reptiles in the Coal-measures of Ireland, in the last 

 number of the Geological Magazine (p. 4), that their Sauro- 

 Batrachian character had not been detected by any person before 

 Professor Huxley's visit to Dublin in the latter part of last November. 



Such, however, is not the case. The first specimens were collected 

 by Mr. W. B. Brownrigg, and submitted to me for examination ; 

 they were afterwards exhibited by that gentleman at the meeting of 

 the Royal Geological Society of Ireland on June 14 of last year. I 

 was not present on that occasion ; but at a subsequent meeting, 

 held on November 8, other specimens collected by Mr. John Edge 

 and Mr. H. P. Wall, and presented by those gentlemen to the 

 Museum of Trinity College, were brought before the meeting, and 

 at the discussion which followed the reading of Mr. Wall's paper, I 

 distinctly stated my opinion that the majority of the fossils then 

 collected were the remains of Air-breathing Reptiles of Sauro- 

 Batrachian type, some of the forms appearing to resemble Archego- 

 saurus, one of the Labyrinthodonts. 



The very perfect specimen procured by Mr. Charles Galvan/ — 



^ Incorrectly spelt Galton in Mr. Etheridge's notice of these fossils. 



