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 70

An illustration from 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, leaf 70 — , returns to thefune temperament as to beat and cold.To prefeive the fame degree of heat,when the different obfervatiens are made,the machine is fixed in a tin vefll-1 B K,filled with water up to g h, above theball, and a very fenfible thermometer ha3alio its ball under water, that one mayobferve… … ^S.ftfbyk* .:;,//, LEV C i9J5 3 LEV which one may do comeniently by meansof the wooden frame, vhich is fet uprightby the three (crews S, S, S, ibid* n9 4.and a line and plummet P P, n 5. Atthe back, part of the wcoden frame, fromthe piece at top K, hangs the plummetP, over a brals point at N ; M m…

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