Perspective; the old and the new method ..
A 1921 instructional treatise on perspective drawing by the English ophthalmologist and writer A. S. Percival, published in London and New York by Longmans, Green for art students and draughtsmen. The plates are line diagrams: boxes, cones and pyramids built from vanishing points, with lettered vertices, dashed construction lines and figure captions usable as geometric ornament or technical-drawing motifs.
