40 Fingal and East Coast. 



Granite extends from St. Patrick's Head, where it 

 contains much hornblende, to Falmouth, and thence 

 along the coast, with the intervention of clay-slate at two 

 or three points, to Wabbs' Bay, and with scarcely any 

 other interruption to the Schouten Island. 



At Long Point, near the Douglas River, clay-slate in 

 vertical beds is supported by granite, which also intersects 

 it in the shape of veins ramifying to extreme minuteness. 

 The same relation presents about seven miles further to 

 the northward. 



Every where the beds of clay-slate are discovered in 

 the same vertical or nearly vertical state ; and every 

 where they have the same meridional direction. 



It appears, then, that the clay-slate was at first elevated 

 by a power having a nearly meridional direction. In 

 some instances this elevation seems only to have caused 

 an inclination of about 60° or 65° ; and that upon the 

 broken edges of the clay-slate so disposed the series of 

 clayey sandstones, conglomerate, ferruginous, and clayey 

 schists, &c., extending to the crinoidal limestone, and 

 probably the carboniferous rocks, were deposited during 

 a period of repose as compared with that which had 

 preceded it, that of the subsidence of the material of 

 the transition rocks, and of the eruptive action which 

 threw them into confusion at, or soon after, the period of 

 deposition. 



But the strata superposed on the clay-slate, including 

 the whole carboniferous series, have also been tilted up 

 to an angle of about 15°, and by a force, too, whose axis 

 was nearly north and south ; and with these beds the 

 clay-slate took, of course, a further inclination. 



The disposition of the clay-slate series, though gene- 

 rally vertical, or nearly, is subject to irregularities which 

 bespeak a kind and amount of disturbance which can 

 scarcely be estimated by any action of which we possess 



