8vo. 4pp. Stapled into original publisher's printed buff wrappers. Extremities sunned. Foxed.

The first offprint edition, extracted from the Bulletin des Commissions Royales d'Art ed d'Archeologie (1929), of an essay by Belgian architect and designer, and a founder of the Art Nouveau movement, Victor Horta (1861-1947) discussing the depiction of structures within fifteenth century painting.