L'architettura pratica dettata nella Scuola e Cattedra dell'insigne Accademia di S. Luca
A practical architecture treatise by Giuseppe Valadier, issued in Rome in 1831 under the Accademia nazionale di San Luca, drawn from its lectures for architecture students. The first picture is a loose pen sketch of a wooden ladder-back chair with a bundle of dried grass or palm fronds draped over the seat, and the second is a finely engraved heraldic shield with a cardinal's hat and tasselled cords. A designer might take from them the economy of ink line on the chair and the ornamental discipline of the engraved cartouche.
