The hydrostaticks; : or, The weight, force, and pressure of fluid bodies made evident by physical, and sensible experiments, together with some miscellany observations, the last whereof is a short history of coal, and of all the common and proper accidents thereof, a subject never treated of before. (1672)
Sinclair, George, d. 1696 · Edinburgh : Printed by George Swintoun, James Glen, and Thomas Brown · leaf 324
The piece of ground to be tried, is PN, where-thereare feveral Scams of Metals ^ that 0*/>/>j out at the PointsTC L M N. Suppofe the lowed to be the C^/3 viz. IN,for which you are to make trial. You Digg firft at K^without the Cropp of the Seam F K, and you dig till youfind the other Seam ol…
Hydrostatics · Coal
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