134 PROCEEDINGS OF SOCIETIES. 



EXPLANATION OF PLATE VI. 



Fig. 1. Sketch on the shore at Bundoran, at low water : b, c, d, a ra- 

 vine ; c, e, a vertical fault, having the dotted part d, Old Red Sand- 

 stone, on one side of it ; the shaded part b, Carboniferous Slate, with 

 fossils, on the other. 



Fig. 2. Sketch of section at Kildoney, near Ballyshannon : the dotted 

 part Old Red Sandstone, the other part limestone ; b, d, a vertical fault 

 between them, which brings the two rocks into juxtaposition at the 

 surface. 



Fig. 3. Sketch of section on the shore at Cultra, four miles 1ST; E. of 

 Belfast : from a to b red sandstone ; from b to c gray and black shale, 

 containing scales of Holoptychius and Paleoniscus, with Modiola, and 

 others ; c, d, red sandstone ; d, e, yellow magnesian limestone ; e, f t 

 red sandstone ; /, g, thin beds of bluish-gray limestone and red sand- 

 stone alternating ; g, h, red sandstone. At c, d, e, f, g, whin dykes, 

 generally vertical. 



Fig. 4. Sketch section from Shean Hill, on the south, across a part of 

 Lough Erne to Portinode, on the north : A, a, bands of millstone grit 

 on the different sides of the fault e, /, and geological equivalents; 

 B, b, limestone groups, and equivalents also ; C, e, Carboniferous Slate, 

 same ; D, d. Old Red Sandstone, same ; g, a talus of debris at base of 

 cliff adjoining the fault; h, a part of Lough Erne. 



Fig. 5. Sketch section near Bundoran, looking IS". W. : a, band of mill- 

 stone grit ; b, limestone in Dartry mountain ; c, Carboniferous slate, 

 which lies in conformable succession on d, the upper part of the Old 

 Red Sandstone, which here, as in most other places, is yellowish ; e, 

 Carboniferous Slate, separated from d by a fault ; /, limestone at Fin- 

 ner Point, the junction with e, not clear, being covered with sand. 



Fig. 6. Sketch section through the Slievebeagh mountains, from Mo- 

 nagh to near Clogher, looking westward : a, b, sandstones and shales 

 of the Coal series alternating ; c, Carboniferous Limestone ; d, Car- 

 boniferous Slate ; e, Old Red Sandstone ; /, Graywacke, or gray clay- 

 slate and grit alternating ; g, brown grit, with red and purple shales 

 alternating, the grits resembling those near Ferriter's Cove, Dingle. 



