Les règles de la perspective pratique : mise à la portée de toutes les intelligences et indispensable pour l'étude du dessin en général
Les règles de la perspective pratique is an 1839 Paris perspective manual by J. P. Thénot (1803-1857), written for anyone learning to draw, not only specialists. Its pictures are black-and-white line plates of geometric perspective constructions, with vanishing lines radiating across stairs, blocks and architectural forms, plus a decorative 'ARTS' allegorical vignette of a bust surrounded by drawing instruments and a palette. A designer might take from them the clarity of schematic line diagrams and the orderly logic of converging lines for layouts and spatial guides.
