1866.] 



HAEKNESS — GALAVA r . 



607 



b^ 



M 



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wards through Shindilla Lake, and is 

 again seen on the Clifden Eoad at the 

 Halfway House, where it has a dip towards 

 the south at 45°. Prom the Halfway- 

 House it is again seen at several spots, 

 where it has been worked, on the south 

 side of Clifden Eoad to near Recess. 



About a mile north of Recess, at the 

 southern base of the hill called Lisoughter, 

 is a small village bearing the name of the 

 hill. Here the limestone again appears, 

 but considerably to the north of its former 

 line of strike. It exhibits at Lisoughter 

 its east and west strike, and passes under 

 gneissose rocks on its south side, but is 

 greatly contorted in its dips. At Li- 

 soughter it abounds in a dark-green 

 variety of serpentine (Loganite), and pre- 

 sents a darker colour than where it occurs 

 as a more easterly band. Besides abound- 

 ing in serpentine, the limestone at Li- 

 soughter also contains well- developed 

 radiated crystals of tremolite. A short 

 distance west of Lisoughter, at Coulma- 

 thau, between Derryclare Lake and Lough 

 Inagh, it is again seen, and here has its 

 usual light -grey colour and its semi- 

 crystalline nature. A little to the south- 

 west of Conlmathan, on the margin of a 

 small bay on the eastern side of Derryclare 

 Lake, the limestone also occurs, having 

 serpentine imbedded in it, and exhibiting 

 the aspect which it presents at Lisough- 

 ter. Prom the eastern margin of Derry- 

 clare lake it extends westwards on the 

 northern side of the lake, and is again 

 seen on the southern side of Derryclare 

 Mountain. West of this it occurs, in the 

 form of a dark-coloured serpentinous 

 limestone, in the lower course of a stream 

 called the Glencoughan River, which 

 flows from a wild deep gorge between two 

 of the Twelve Bens of Connemara, Bencorr 

 (2336 feet), and Benbreen (2276 feet). 



The serpentinous limestone at Glen- 

 coughan River dips towards the south and 

 passes under the gneissose rocks. It has 

 on its northern side a mass of quartz- 

 rock, which is seen in the course of the 

 stream a short distance above the lime- 



