Wynne — On Submerged Peat Mosses and Trees. 501 



Banks," particularly around the deeply-indented bay called Lough 

 Brick, and at the lower end of the lake about Ballyrush, Armagh, 

 and Castlebaldwin. Where this is the case the bottom of the lake 

 is often also formed of peat. with trees, while in other places huge 

 masses of the local rocks washed out of the drift, like that called 

 the "Bock of Muck," on the Annaghcloy shore, may be seen, 

 scattered over the bottom, through the clear water, when this is 

 calm. Under similar circumstances, off the point of Aughanah, 

 on the property of^Colonel Ffolliott, where the almost horizontal 

 limestone comes to the surface of the lake, at the shoal called the 

 " Quarries," or the " Flag of Aughanah," one can see, down be- 

 neath the lowest level to which the water ever falls, the stools 

 and stumps of large trees, so thickly accumulated in places, that 

 when in the little strait between " The Slab " and the point, boat- 

 men exert more than usual caution to avoid "snags." Most of the 

 trees appear to be in their position of growth, with, in some cases, 

 but little, if anything, intervening between them and the limestone 

 slab on which they'rest. 



Here again the case recurs that the lake could scarcely have 

 stood at a lower level while its escape lay in the present direction, 

 on account of its retaining rock barrier ; and the conditions which 

 would have placed these trees in their natural subaerial position, 

 would require either the occurrence of earth movements of subse- 

 quent date, or such a balance between the supply of lake water 

 and its exhaustion by means of evaporation, that the water should 

 be maintained at a lower level than at present, when of course the 

 lake could have had no river outlet at all. 



I have been acquainted with both of these lakes since child- 

 hood, and I have repeatedly visited Lough Arrow at the season of 

 the Ephemeral June Carnival of Salmo ferox. Lough Brick, of 

 which I have spoken, was, within my memory, almost a small 

 separate lake, partly surrounded, and nearly divided from Lough 

 Arrow, by bog banks. Through a gap in these banks a boat could 

 just pass; but the banks have since been almost entirely washed 

 away — one islet]remaining near where the gap was, on both sides 

 of which boats can pass freely now. 



On Captain Grethin's property at Ballindoon, towards the other 

 end of the lake, there is a small recess in the boggy bank of the 

 lake, called " Poolnaperches." Here a projecting promontory of 



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