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 Charles I. had amassed with a diligence equal to his taste. And it was discovered soon after his present Majesty’s accession in the same cabinet where Queen Caroline found the fine portraits of the court of Henry VIII. by Hans Holbein, which the King’s liberality permitted me lately to lay before the public. On the cover of this volume is written, in gold letters, what ascertains its descent; Disegni di Leonardo da Vinci, restaurati da Pompeo Leoni.”

Although no part of the collections of Leonardo was arranged and prepared by himself, or others under his direction, for publication, some extracts have been made from his writings, and given to the world as separate tracts. The best known, and indeed the principal of these, is the following Treatise on Painting, of which there will be occasion to say more presently; but besides this, Edward Cooper, a London bookseller, about the year 1720, published a fragment of a Treatise by Leonardo da Vinci, on the Motions of the Human Body, and the Manner of drawing Figures, according to geometrical Rules. It contains but ten plates in folio, including the title-page, and was evidently extracted from some of the volumes of his collections, as it consists of slight sketches and verbal Rh