The seven lamps of architecture
John Ruskin's 1849 treatise The Seven Lamps of Architecture, published in New York by John Wiley, is an architectural theory book written for students and builders of the period. Its plates are black-and-white line drawings of Gothic details: pointed arches, twisted colonnettes, carved capitals, tracery, and inlaid geometric patterns. A designer could draw on their dense ornament, rhythmic repetition of arches, and the contrast between delicate linework and heavy shadow.
