152 Scientific Proceedings, Royal Dublin Society. 



about four feet above the Trias. The sandstone near the dyke and 

 branches, is much altered and baked, the original structure of 

 the rock being entirely obliterated. 



To the N.E., near Cushendall, the Trias rests direct on a 

 massive conglomerate, which is principally made up of granite 

 and quartz fragments (Lower Old Red Sandstone or Silurian). 

 Thus no coal measures occur in this section, nor is it probable they 

 would be found by boring in Glenariff, if the opinion expressed 

 by your late President (Mr. Kinahan), is correct ; namely, that 

 this conglomerate is one of the "shore beds" of the Silurian rocks, 

 that further south-west occur in mass in Tyrone and Fermanagh, 

 still it is not improbable that coal measures may exist further 

 southward under the Tertiary and Secondary rocks at Carnlough 

 or Glenarm. 



Over the Trias there are thin bands of greensand, principally 

 yellow and greenish sandstones and brownish clays, with more 

 or less calcareous bands. In the upper beds, calcite veins are 

 frequent, and in one place asbestos occurs in the joints close to 

 a considerable fault, which throws down the basalt nearly against 

 the greensand. At the base of the cretaceous rocks is a very thin 

 bed of fine conglomerate made up of rounded pieces of quartz, 

 and fragments of chlorite in a sandy calcareous matrix. The 

 inlying fragments vary in size from that of a pea to that of a 

 hen's egg, and are usually so fixed in the matrix as to break with 

 it. This seems to be the representation of the upper bed of the 

 *' Hibernian greensand " of Tate, and from its appearance it is 

 locally called " concrete." 



The Lias, which is of considerable thickness near Lame, does 

 not seem to occur in Glenariff*, though there is a small exposure 

 of it a little to the east of Garron point. 



The overlying white limestone (indurated chalk) has a specific 

 gravity of 2*6, with a semi hackly fracture ; the numerous 

 contained flints sometimes occur in layers parallel to the bedding, 

 but are often scattered irregularly through the mass ; the bedding 

 planes are seldom well developed but when they are, the rock 

 quarries into large and good building stone. The most con- 

 spicuous and numerous fossil is a bellemnite, scarcely a large 

 stone can be quarried that does not contain one or more, while 

 they are also frequent in the flint nodules. The purity of the 



