418 Scientific Proceedings, Royal Dublin Society. 



and are so broken up by joints that they cannot be raised except 

 in very small pieces. 



Lettevy. Over two miles from Grlenties. — Light whitish-grey, 

 silicious, and micaceous. In this vicinity are other quarries from 

 which similar stones can be procured. 



Fin town. To the north of Lough Finn. — White to greyish 

 crystalline. 



Glenveagh. A little south-east of the Castle. — White : highly 

 crystalline. Only the surface of this bed has been opened. Here 

 it is friable and much cut up by joints. Stone untried in depth. 



Lough Aldbbon (Garton). Over two miles north of Church Hill. 

 — White and pinkish, solid, fine, crystalline; polishes well; seems 

 capable of being raised in large blocks. Appears to be an excellent 

 material for all cut-stone purposes; but as yet the quarry has only 

 been very partially tried. 



Drumlakagh. Nearly three miles eastward of Creeslough. — 

 White and grey-tinted ; crystalline ; thick and thin-bedded. Could 

 be raised in fair-sized blocks. Not at present worked, except for 

 lime. 



Ardanawark. Two miles north-east of Lough Salt, in the hills 

 north-east of Kilmacrennan. — White and pinkish, highly and 

 coarsely crystalline. Can be raised in large blocks, Appears to 

 be well suited for tool- work, but at present only worked for lime. 

 Polishes well and easily. 



Magheraboy. Three miles south-east of Letterkenny. — White 

 to pinkish ; very crystalline. This stone seems to be totally 

 unworked, although, from its appearance, it ought to give good 

 lime, and be suitable for cut-stone purposes. As it is near 

 Letterkenny, in which neighbourhood there is no stone of any 

 kind suitable for tool- work, this seems worthy of a trial. 



Cloghroe. Two and a-half miles from Stranorlar.— Bluish-grey 

 and white; crystalline; partly schistose. 



Cullanacon. Two miles west of Convoy. — Greyish-white and 

 pink- shaded ; crystalline ; thin-bedded, with schistose partings. 



Kiliole. Nearly a mile east of Convoy. — White to pinkish ; 

 compact ; crystalline. A good stone, but thin-bedded. 



Maghera-sollus. A mile E. N. E. of Eaphoe. — White and 

 greyish-white ; compact ; crystalline ; thin-bedded, with schistose 

 partings. 



