Observations on the different strata of earths, and minerals. More particularly of such as are found in the coal-mines of Great Britain / By John Strachey.

  • Strachey, John.
Date:
1727
Catalogue details

Licence: Public Domain Mark

Credit: Observations on the different strata of earths, and minerals. More particularly of such as are found in the coal-mines of Great Britain / By John Strachey. Source: Wellcome Collection.

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    aflumes, “ That if a Line was drawn from the Mouth of iC the Severn to Newcaflle, and fo round the Terraqueous *e Globe, Coal would be found near that Line, and Icarce cc any where out of it. Twere to be wifhed he had given fbnie determinate Breadth to that Line j for taking it to be 120 Miles broad, it runs Northward through the Ocean, and takes in only a little of Norway and Greenland,, where I queftion, if Coal is difcovered, and Southward this Line would touch none of the known World; whereas Coal is found in France, in Ireland, and lome Parts of Germany, particularly the Bifhoprick of Liege, which will be excluded from this Line : yet I agree, that draw a Line, or rather a Segment, from Lye under Mendip in Somerfetjhire, through Lath to Sunderland on the Sea Coaft in Durham, fo that Warwickjhire (which would be without the Strait Line) might be included in the Bow or Middle of this Segment, and another parallel with it from Tenby in Wales, to Lai- doe Weft from Falkirk in Scotland, thefe two parallel Seg¬ ments being about 11 o Miles in Breadth, and 300 in Length, and bearing North and by Eaft, and South and by Weft, will include all the Coal hitherto found in Great-Britain, and excepting the Collyerks of Warwickjhire, which break out to the Southward, and confift of Free Coal, the North¬ ern Part of this Line will be found to be Free Coal, or that which burns to a white Afh, as all the Weljh, and almoft all the Scots Coal does; the other, or Southerly Line, will be of the Caking Sort, fuclvas is the Somerfet, GHouceJier, and Newcaftie Coal; I will therefore call this the Coal-Plan, And let this Plan be ftill farther extended South-Weft, it will include not only the Lead Mines on Mendip Hills, and Broadewell Down, which croffes and bounds the Coal Country on that End, but alfo the Copper Mines of that County, and Devon, and Tin-Mines of Cornwall ; and carry the fame Lines Northward beyond Toy, (which bounds the Coal Country at the North End) it will take in the Lead and Copper found in the Highlands of Scotland. Now as this Coal Country is at both Ends bounded by Hills of Lead,