Remarks on the architecture of the middle ages, especially of Italy
Robert Willis's 1835 Remarks on the architecture of the middle ages, published in Cambridge by J. & J. J. Deighton, is a scholarly architectural treatise for students and antiquarians of medieval building. Its engraved plates show arches, piers, vaults and window tracery drawn in careful line, arranged in numbered groups that a designer could study for Romanesque-to-Gothic structural detail and ornament.
