£ 629 ] 



LV.— DEAL TIMBEE IN THE LAKE BASINS AND PEAT BOGS 

 OP NOBTH-EAST DONEGAL. By G. H. KINAHAN, 

 M.K.LA. 



[Read, April 20, 1887.] 



Attention to the " corkers," or roots of trees, apparently in their 

 natural positions in some of the lake basins, Co. Sligo, was directed 

 by Mr. A. B. Wynne, at the last meeting of the Society, and he 

 suggested that it was possible that once they may have been on a 

 higher level on a substratum of peat, the latter being gradually 

 removed by the wash or suction of the lake water, so that even- 

 tually they sank to their present position (antea, p. 499). 



In the north-east of the barony of Kilmacrennan, Co. Donegal, 

 "corkers" in the basins of the loughs and loughauns are very 

 general ; and for the last two years I have made them a special 

 study, as it appears difficult to conceive how trees such as oaks and 

 firs, especially the latter, which most abound, could have grown in 

 places from which there is now no natural drainage. 



In this portion of Donegal these loughs and loughauns are in 

 more or less regular bowl, or saucer-like, depressions; while in 

 some places there are shallow, oval, dish-shaped depressions, occu- 

 pied by bog, in all of which deal or oak corkers are found in situ, 

 that is, where they originally grew, below the present level of the 

 natural drainage. Since the paper mentioned was read I have had 

 opportunities of carefully noting the facts in connexion with some 

 of the bogs and lakes which are now recorded. 



No. I. Bog in the Depression about Lough Aweel, between 

 Ramelton and Milford. — This lies in a large, irregular, oval, 

 dish-shaped depression. To drain the bog, and make it available 

 for turf-cutting, canals have been opened to the southward and 

 westward, through the rim of drift margining the hollow ; and at 

 the greatest depth the bog has at present been cut, in the sub- 

 stratum, corkers of oak occur ; while a little above these, in the 

 peat, and extending horizontally to and on to the marginal drift 

 rim, are corkers of deal. None of them seem to have been dis- 

 placed, after they originally grew, until the bogs were cut. 



No. ' II. Glencam Bog, or Mill-pond. — This is situated a little 



SCIEN. PROC. E.D.S. — VOL. V., PT. VIII. 2 X 



