Designs for a rotative roof for an astronomical telescope by Reverend William Pearson and John Smeaton. Copperplate engraving by Wilson Lowry after a drawing by J. Farey from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longman, Hurst, Rees, Orme and Brown, London, 1820.

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Photo credit: © Florilegius / Alamy / Afripics
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Keywords: 19th, abraham, arts, astronomical, astronomy, century, copperplate, cyclopedia, dictionary, drawing, engraving, illustration, john, literature, pearson, rees, revd., roof, rotative, sciences, smeaton, telescope, universal, william