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

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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$\ | ' _ [ >5 ] Laws of Gravitation : He fays, the Firft is Marl, Second Freeftone, then Iron Stone, then Kennel, then fome other Strata, then Coal again. In the Bhilofiophical Tranfactions, Mr* Bellars gives you an Account of the Strata at Dudly in Staffordjhire, which is inferred in the following Scheme. Dr. Blott tells us. That the Cannel Coal is of fo clofe a Texture, that the Choir of the Cathedral at Litchfield is paved with it, and Alabafier-Lozangy 5 that they turn Salt- fellers, Standifhes, Candlefticks, &c. in it. IN the Lord BagetsPark, of Beaudefiarty is dug of this Coal, which he thinks is fo called from the Britijh, Canwyl, a Can¬ dle, and that from Cam, Candida, and Gwylly Tenebne* Common Coal at Wednesburyy Dudley and Sedgley in Stajfordjhire, burns to a white Afh, leaving no Cinders, and therein refembles the Scots Coal. THE Peacock Coal at Henly-Green near Newcafile-under- Line, does not exceed other Pits in Hardnefs : It is divided into Plates about one fourth of an Inch thick this differs from the Somerfitjhire Vein, which they call by the fame Name ; for the laft mentioned Coal cakes, and produces hard Cinders, but refembles it in its changeable Colour. A T Etingal in Sedgley, the uppermoft Beds of Coal are 14 Yards thick above the Iron-ftone. After the Soil or Arable, Gravel and Sand are taken off 5 all the Bafs Free¬ ftone, of what Sort foever, Clunks, Bats and Partings, keep a regular Courfe one above another. One Work there is at Biddulph, which dips almoft perpendicular, in others the Dip is about 1 Foot in 10, as at IVednesbury. In the 3d or mod Common Sort of Coal, the Dip is 1 Foot in 3, or 1 in 5. AT Footerill in Apidale they drive in upon the Level $ it frequently alters its Dip or Crop by a Leap, which is the fame as they call a Trap in Somerfetjhire. AT Hardings - Wood about Newcaflle, and, generally fpeaking, the Row, lying N. and S. draws nearer together Northward, and fpreads to the South 5 it dips there Eaft, and rifes Weft, but at Cheddle the Dip is S. W. by S. or to the 2- a-Clock$