L'architettura pratica dettata nella Scuola e Cattedra dell'insigne Accademia di S. Luca
A lecture-based architecture treatise by Giuseppe Valadier, published in Rome in 1831 under the Accademia di San Luca, written for students of architecture. The one picture is a loose sketch of a wooden ladder-back chair with a drooping palm frond or leafy branch draped over its seat and back, drawn in olive-green ink on a cream page. A designer might take from it the looseness of quick ink line, with hatching used for shadow and a single tinted accent colour against plain paper.
