Page:Transactions of the Geological Society, 1st series, vol. 3.djvu/273

 nor specimens, can give an adequate idea of their disposition and confusion. The drawings which accompany this paper may serve to illustrate a description which can only be general, since no drawing less in size than the rock itself could give an accurate representation of the place. In contact with this great mass of granite, which for a certain space offers no very particular feature, are seen rocks of a schistose nature. These are succeeded by blue limestone, and subsequently by schist and granite, but in a state of disorder so inexplicable, that I do not attempt to describe their relative positions. No appearance of parallelism is to be seen in the schistose rock, but the limestone, although much bent and twisted, has the aspect either of a complicated vein, or of the edges of a bed in a vertical position, the portions of which have been split asunder and filled with other materials. The lamellar form of this limestone and its connections with the surrounding rocks, leave however no doubt of its being the exposed edge of a bed, and it must at the same time be remarked that besides being placed in a vertical position, the line of its course is at right angles or nearly so to the general bearing of the strata, of which it seems once to have formed a regular constituent part. Viewing the whole of this compound mass of schist and limestone as a single rock, and the granite as another, it is easily seen on the most superficial glance, from the strong contrast between the dark grey of the former and the red of the latter, that the dark rock is intersected and disturbed by innumerable veins of granite. These traverse it in every possible direction, and are of various sizes, the smallest not exceeding that of a thread, and reticulating the dark rock in a most intricate and amusing