398 Scientific Proceedings, Royal Dublin Society. 



At the base of the range of hills north of Fintown are white 

 limestones favourably reported on. No trials, however, have been 

 made on them. 



A little south-east of Glenveigh Castle, a surface trial was made 

 on a white, highly crystalline limestone. Enough of it is not seen 

 to form an opinion ; but the rock appears worthy of making a more 

 extensive opening on it. 



In the parish of Grartan, on the west shore of Lough Akibbon, 

 and two miles north of Church Hill, is a white, greyish, and 

 pink-tinted stone. It polishes well, and has been approved of by 

 the marble-workers ; but further and more extended trials are 

 necessary to prove whether it can be raised in blocks of profitable 

 size. 



In the townland of Magheranan, to the east of Letterkenny, 

 is a nice-looking white stone, spotted with green, that has not been 

 opened up, and its qualities are unknown. 



In the hills north-east of Kilmacrennan, near the village of 

 Ardanawark, are white and pinkish rocks that can be raised, it is 

 said, in large-sized blocks. No trial has been made on them ; but 

 a specimen polished easily and well. They appear to be in the 

 same beds as those at Lough Akibbon. 



Three miles south-east of Letterkenny, in Magheraboy, is a 

 nice-looking, white, untried stone. 



About a mile east of Convoy, at Kiltale, there is a white stone 

 of good appearance, but thin-bedded. 



In various other places in the gneiss district (Cambrian) of 

 Donegal are small detached masses, or beds, of white, or clouded- 

 white crystalline limestones ; but as none of them seem to be of a 

 magnitude or quality to form a " quarry," it appears unnecessary 

 to enumerate them. 



GrALWAY. 



To the south of Letterfrack, in the hill of Creggs, arej white 

 limestones. One portion is a stone of " excellent quality, equal to 

 the Italian, but it rises in small blocks" [Sibthorpe). After some 

 time spent in sinking on this vein, Dr. Ritchie of Belfast failed in 

 getting good-sized marketable blocks. 



On the western shore of Derryclare Lough there is a quarry, 

 formerly worked by the Martins of Ballynahinch, who seem to 



