George Sinclair

George Sinclair (Sinclar) (ca.1630–1696) was a Scottish mathematician, engineer and demonologist. The first Professor of Mathematics at the University of Glasgow, he is known for Satan's Invisible World Discovered,, a work on witchcraft, ghosts and other supernatural phenomena. He wrote in all three areas of his interests, including an account of the "Glenluce Devil", a poltergeist case from c. 1654, in a 1672 book mainly on hydrostatics but also a pioneering study of geological structures through his experience in coal mines.

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Satan's Invisible World Discovered $b or a choice collection of modern relations, proving evidently, against the atheists of this present age, that there are devils, spirits, witches, and apparitions, from authentic records, and attestations of witnesses of undoubted veracity. To which is now added, that marvellous history of Major Weir and his sister, the witches of Bargarran, Pittenweem, Calder, &c.

"Satan's Invisible World Discovered" by George Sinclair is a collection of accounts and testimonies relating to beliefs in witchcraft, spirits, and ap...

By George Sinclair

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George Sinclair

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