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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 299

An illustration from 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, leaf 299
inthefecond figure, is a greater anglejthen A B C rnthefirft.Yet I have feen zCoal, the body whereof from the dipp, orfardeft point of declination, had its rife towards the croppvery infenfibly, it being Flatt, and then began to be morefenfible, till at laft coming near to the furface of the… … Where A B is the Line drawn from the extream pointsof the Croppy right horizontal. The body of the Codfifing infenfibly, is D C# But affoon as it comes to C, itrifeth with a great afcent till it Cropp out at A. Here yottfee, that in Head of one fide of a Triangle, which the courfeof other Cods in…

Hydrostatics · Coal

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