A new and complete dictionary of arts and sciences : comprehending all the branches of useful knowledge, with accurate descriptions as well of the various machines, instruments, tools, figures, and schemes necessary for illustrating them, as of the classes, kinds, preparations, and uses of natural productions, whether animals, vegetables, minerals, fossils, or fluids : together with the kingdoms, provinces, cities, towns, and other remarkable places throughout the world : illustrated with above three hundred copper-plates, engraved by Mr. Jefferys, geographer to His Majesty : the whole extracted from the best authors in all languages (1763)
Society of Arts (Great Britain). Society of Gentlemen, Jefferys, Thomas, -1771, Grignion, Charles, 1721-1810, Wale, Samuel, d. 1786, Owen, W. (William), d. 1793 · London : Printed for W. Owen, at Homer's Head, in Fleet-Street · leaf 710
eeds the air : jthen let the hole be quite flopped up j Iand doing this at every eminence of the.pipe, the whole air will be difcharged, jand the full quantity of water will be]brought home at E. If the fpring bevery much higher than the place cf de-ilivery, the places of air in the pipelwill not… … p I p [ 2487 ] P I Q. may be feen at 0 p g, which other wayswonJ have been at s ; and thereforethe bole mull be made beyond s. Ifthe end E, be (topped for fome time,fo that the water may rcafe to be in mo-tion, the air will go ba~k gradually, asappears at uy av t, where it may be letout. But Dr.…
Art · Science
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