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TO

The Lovers of Perſpective.

HE Art of PERSPECTIVE does, with wonderful Pleaſure, deceive the Eye, the moſt ſubtle of all our outward Senſes; and is very neceſſary to be known of all, who in Painting would give a due Place and Proportion to their Figures, and more or leſs Strength requiſite to the Lights and Shades of the Picture. This might be inſenſibly attain'd, if Perſons, not content with the Study of Drawing only, would accuſtom themſelves exactly to delineate the ſeveral Orders of Architecture. Nevertheleſs, among many who have hitherto vigorouſly undertaken this Work, there have been but very few, who have not been in a manner quite diſcourag'd, thro' want of Mailers and Books to teach them clearly and methodically the Rules of Perſpective-Projections, from the firſt Principles of the Art, to the entire Perfection thereof. Wherefore, apprehending that by long and conſtant Practice in Works of this kind, I had acquir'd a Method to facilitate the ſame; I judg'd it might be for the Satisfaction and Advantage of the Studious, to publiſh the fhorteft Way for defigning in Perſpective the ſeveral Orders of Architecture, by a common and eaſy Rule, free from the Incumbrances of occult Lines. But if it pleaſe God to give me Life and Health to compoſe another Book, I ſhall then ſhew the Method of putting Works into Perſpective by the Rule I make uſe of at preſent, which is more eaſy and general than the common way, tho this be the Foundation of the other. Therefore, Reader, my Advice is, that you chearfully begin your Work, with a Reſolution to draw all the Points thereof to that true Point, the Glory of GOD; and I durſt predict, and promiſe you good Succeſs in ſo honourable an Undertaking.