An appendix to the Elements of Euclid, in seven books : containing forty-two moveable schemes for forming the various kinds of solids, and their sections, by which the doctrine of solids in the eleventh, twelfth, and fifteenth books of Euclid is illustrated, and rendered more easy to learners than heretofore ...
John Lodge Cowley's 1765 London appendix to Euclid, sold by Thomas Cadell, supplied students of solid geometry with forty-two pop-up schemes to be cut and folded into polyhedra and their sections. The engravings are bare line diagrams: unfolded nets of cubes, octahedra and prisms, lettered vertices, numbered triangle fans, and single faces shaded with fine hatching against blank paper.
