Kinahan — On Granite and Metamorphic Rocks. 233 



originally an elvan or granite course, which subsequently was 

 foliated and changed by metamorphic action into gneiss. This 

 rock has not been utilized ; but it is very suitable for coarse, heavy 

 work like country bridges or harbour works. 



Dun glow granite quarries. — In this neighbourhood, as stated by 

 experts who have lately examined the country, there are inex- 

 haustible supplies of granites of varied colour and texture, which 

 are proposed to be worked by a company. Mr. Philip Brannon's 

 report states that they range " from dark and almost purple reds 

 into graphic, mottled and cloudy ; rich bright red ; bright red ; 

 faint tones of red (salmon, pink, rose, &c.) ; through deep grey, 

 or blue, and very light silvery grey, into a beautiful resplendent 

 white granite." The stones proposed to be worked are " fine and 

 even-grained, without verts, and capable of receiving an even and 

 good polish. As they are regularly jointed, both horizontally and 

 vertically, the stones can be raised with very little waste. They 

 are of long scantlings and large dimensions." The granite 

 boulders scattered about would afford blocks large enough for any 

 practical purpose. The stone in these boulders is perfectly sound, 

 without any apparent joints or flaws. 



It is proposed to work the stone principally in situ ; finishing- 

 work, such as planing, polishing, &c, being carried on in a factory 

 near Dunglow. From these works it is intended to send into the 

 market " cut and polished slabs, columns, lintels, sills, steps, base- 

 ments, string courses, facing, dressing, or any other requirements 

 for monumental or architectural ornamental works ; also rough 

 stone suitable for paving-setts, kerbing, quoins, facings," &c. 



The quarries or places in the Rosses specially named are : — 

 Burton Port, rich mottled ; Leckena, dark to light salmon and light 

 red ; Lefinn, pink and brilliant red ; Garron Hill, or Toberkeen, 

 graphic mottled (purple and red) ; Dungloiv Mill, light and dark 

 greys ; and Lough-na-geeragh, white. 



As far back as 1865, Mr. William Harte, County Surveyor, 

 Co. Donegal, who had used the Dunglow granite for various pur- 

 poses in Derry and elsewhere, brought these granites under the 

 notice of Griffith, Jukes, Haughton, and Scott, for their beauty 

 and other qualifications. As these authorities approved of them, 

 they were subsequently worked for a time by Messrs. Harte and 

 Owen, especially at Lefinn. However, at that time polished 



SCIEN. PROC. R.D.S. VOL. VI., FT. IV. T 



