On the Carboniferous Slate (or Devonian Rocks) and the Old Red Sandstone of South Ireland and North Devon

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Abstract
Having been able during the last summer to extend a little my knowledge of North Devon, especially in the neighbourhood of Lynton, and having, as the result of my observations, become quite convinced that the rocks of North Devon belong partly to the group called Carboniferous Slate in Ireland, and partly to the Old Red Sandstone, I propose to lay before the Society the grounds of that conviction. As I shall have to maintain that all the first geologists of the day, including Professor Sedgwick, Sir R. I. Murchison, Mr. Weaver, Sir H. De la Beche and Professor Phillips have misunderstood the structure of the country, let me hasten to avow my belief that nobody whose observations were confined to Devon and Somerset, could have arrived at any other than their conclusions. I fully admit that the rocks near Lynton appear to be the lowest, and that there appears to be a regular ascending succession of rock-groups from Lynton to the latitude of Barnstaple. I am, however, compelled to dispute the reality of this apparent order of succession, and to suppose that there is, either a concealed anticlinal with an inversion to the north, or, what I believe to be much more probable, a concealed fault running nearly east and west through the centre of North Devon with a large downthrow to the north, and that the Lynton beds are on the same general horizon as those of Baggy Point and Marwood. As my reasons for this supposition are derived

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