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XLIX.— NOTE ON SUBMEEGED PEAT MOSSES AND TEEES 

 IN CEETAIN LAKES IN CONNAUGHT. By A. B. 

 WYNNE, F.G.S. 



[Read, March 23, 1887.] 



The object of this communication is to place before the Society a 

 few observations upon what might be regarded as evidences of 

 relative changes in the level or superficial distribution of land and 

 water in the regions referred to. 



There are, doubtless, several cases besides those to which I 

 shall refer, wherein peat bogs, with trees of a former period, are to 

 be found permanently submerged in various parts of the country, 

 and in present conditions totally different from those under which 

 these trees and growths flourished. It will be sufficient, however, 

 to take the instances of the basin of Lough Arrow, a few miles 

 from Boyle, and of the River Garwogue, connected with and 

 running from Lough Gill, through the town of Sligo. 



As far as regards present circumstances, the basins of both of 

 these lakes are extensively encumbered with " drift," and the water 

 is retained, in both cases, practically in rock basins : that is to say, 

 river action has denuded the drift in the direction of outflow, and 

 the surplus water escapes over beds of the solid carboniferous lime- 

 stone of that country, lying in a nearly horizontal position, or 

 undulating at low angles. In both cases the margin of the water 

 is formed here or there by rock, drift, or the ordinary bogs of the 

 country, the latter indicating, perhaps, a formerly wider extension 

 of wet, swampy ground around these lakes or of their own proper 

 areas. 



The River Garwogue leaves Lough Gill as a broad, sluggish 

 stream, until its rock-bar is reached at Ardachowen. Thereafter 

 the stream becomes more rapid, falling some twenty feet in the 

 short distance between Ardachowen and the tideway, which enters 

 the town of Sligo as far as the Yictoria Bridge. The last reach of 

 the comparatively still water, just above Ardachowen — one of the 

 most beautiful parts of that picturesque locality — is underlaid from 

 side to side by peat, with numerous trunks of trees. It is plain 



SCIEN. PROC. B.D.S. — TOL. V., TT. Til. 2 M 



