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Rules and Examples of Perspective proper for Painters and Architects, etc.

FIGURA Undecima.

John James translation

Stylobatæ Ionici deformatio; ubi de vitanda confusione in elevationibus.

Illustration from Rules and Examples of Perspective proper for Painters and Architects, etc. In English and Latin: Containing a most easie and expeditious method to delineate in perspective all designs relating to architecture

Tum in figura præcedenti, tum rursus in hac, ostendimus quid agendum sit ubi vestigia AA nimium obliquentur, unde oritur confusio; præcipuè in lineis parallelis quæ exhibent latitudines. Non minor difficultas interdum occurret in elevationibus longitudinis opticè deformandis; quòd videlicet, ob nimiam earum obliquitatem, pervium non sit altitudines singularum projecturarum probè discernere ac designare. Ad scopulos istos declinandos, loco elevationis B adhibebitur elevatio C, quæ distinctior est, tum illâ, tum duabus intermediis D & E, ob majorem distantiam quam habet à puncto oculi.

In delineando stylobata nitido, latitudines accipientur ex ultimo vestigio, ponendo unam cuspidem circini in linea perpendiculari, quæ proxima est literæ O: altitudines accipientur ex elevatione C, ponendo unam cuspidem circini in linea plani, ut in præcedentibus ostensum est.

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