ARRAN. GEOLOGY. SECONDARY STRATA. 381 



also, quarries have been opened at a considerable eleva^ 

 tion in the hill ; in which may be seen strata of limestone 

 and shale, so like to the last that it is superfluous to 

 describe them, as the series differs chiefly in being of 

 less extent. Among these beds the same large tere- 

 bratuke described at Corry are also to be found ; their 

 position with respect to the strata being even more conspi- 

 cuously parallel. 



It is not far from this place that the junctions of the schist 

 and granite, and of the sandstone with the schist, formerly 

 described, are to be seen. The bed of schist being here 

 thin, and the distance between the granite and the sand- 

 stone consequently small, some hopes arose that, by pur- 

 suing the edge of the schist, the contact of the sandstone 

 and the granite would be detected. Accordingly I found 

 them in a torrent approaching within a few feet of each 

 other ; the erect and disturbed position of the sandstone 

 always increasing as it approached the granite. Unfor- 

 tunately, as too often happens, a concavity has been 

 formed at the place where the latter disappears ; so that 

 this junction, if it actually exists, is rendered invisible 

 by an accumulation of heavy blocks in a situation from 

 which they may never perhaps be removed. The peculiar 

 interest which has hitherto characterized the secondary 

 strata, ceases at this point, and the remainder is little 

 better than a dry topographical detail, which must never- 

 theless be given. 



The red sandstone continues from Screeb to skirt the 

 side of the mountain, and, as before, to occupy the shore 

 to Brodick bay, where the great extent of alluvial matter 

 prevents it from being any longer visible. But it may 

 be traced hence within the land in several directions; 

 rising up into the hills, and occupying positions, which, 

 from the nature of the surface, are no longer so obvious as 

 they were along the line already described. In this 

 manner, it is to be seen along both sides of Glen Kossie, 



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