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 292
other Metals , above and below, the farderdotn the Cropp of the lowed Coal advance before the Croppof the uppermoft. For illuftration whereof, let usfup-pofe in two feveral grounds, two Coals ^ between which,there is an equal diftance of perpendicular. And fuppofethe Metals in the one ground to… … 6. D JB* ■J\ / X 3 S \ Suppofe then, that D I, is of equal length in both Trl*angles, which is the perpendicular, between the twocpalszyet D F in the fifth Figure, is much longer than D F in-the 6. And the reafon is evident, becaufe; the AngleDIF, ip the j, is greater then the Angle D IF in the…
Hydrostatics · Coal
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Perspectiva; hierinnen auffs kürtzte beschrieben, mit Exempeln eröffnet vnd an Tag gegeben wird, ein newer besonder kurtzer, doch gerechter vnnd sehr leichter Weg, wie allerley Ding, es seyen Corpora, Gebew, oder was möglich zuerdencken vnd in Grund zulegen ist, verruckt oder vnuerruckt, frener in die Perspectyf gebracht werden mag, on einige vergebliche Linie, riss vñ Puncten, [et]c. dergleichen Weg bisshero noch nit bekant gewesen (1571)](https://img.insideoutlibrary.com/img/200/ia-perspectivahieri00lenc-51-24.webp)
