The mathematical and philosophical works of the Right Reverend John Wilkins ... to which is prefix'd the author's life, and an account of his works (1708)

Wilkins, John, 1614-1672, Pre-1801 Imprint Collection (Library of Congress), George Fabyan Collection (Library of Congress) · London, Printed for J. Nicholson [etc.] · leaf 482

An illustration from The mathematical and philosophical works of the Right Reverend John Wilkins ... to which is prefix'd the author's life, and an account of his works, 1708, leaf 482 — hat Strength, as topierce a Plank of fix Inches in thicknefs, (I fpeabwhat I have feen) faith M. Jo. Greaves in his Vjra-rriodografhla. How much greater Force then may weconceive to be imprelfed by the Catapults ? Thefe v.ere fometimes framed for the difchargingof two or three Arrows together, fo… … Both thefe kinds of Engines,, when they were u-fed-at the Siege of any City, were commonly car-ried in a great wooden Turret (firlt invented by *Demttrius,) It was driven upon four Wheels at thebottom, each of its Sides being forty five Cubits, itsHeight ninety. The whole was divided in nine…

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The mathematical and philosophical works of the Right Reverend John Wilkins ... to which is prefix'd the author's life, and an account of his works (1708)

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