The Ordovician Rocks of Western Caermarthenshire

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Abstract
I. Introduction This little contribution to the geology of Caermarthenshire is the result of leisure-work done during some years’ residence in the district. The ground dealt with is practically identical with that examined by the late Thomas Roberts, M.A., whose notes were published in the Quarterly Journal of this Society for May 1893 (vol. xlix): that is, from the River Cywyn on the east to the Tave on the west, and from the base of the Old Red Sandstone on the south to the top of the Dicranograptus -Shales on the north—roughly, a rectangular tract of country 11 miles long by 6 miles wide. (1) Previous work done.—George Owen, of Henllys, as long ago as the year 1595, had given some attention to the economic geology of the district, and in a manuscript, an extract from which is appended to Richard Fenton's ‘Historical Tour through Pembrokeshire,’ refers to certain limestone-bands that occur here, noting, by the way, the proximity of limestones to the coal-deposits of the country. This inference has, from time to time, led to much expenditure of labour and money in a futile search for coal. Levels were driven and pits were sunk; but, of course, no coal was found—except in the fertile imagination of credulous though well-meaning people. The district was examined by the officers of the Geological Survey in 1842, and the results of their labours are recorded in Sheets xli (Map) and 13 (Sections). John Phillips, in his Memoir on the Malvern and Abberley Hills, records

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