Popular astronomy : a concise elementary treatise on the sun, planets, satellites and comets
An elementary treatise on the sun, planets, satellites and comets by American astronomer Ormsby MacKnight Mitchel, published in New York by Oakley & Mason in 1865 for general readers and students. The 36 figures are line diagrams printed on toned paper: concentric orbit circles with lettered radii, sightlines converging on a point marked S, arcs of planetary paths and dotted construction lines, useful as spare geometric marks, orbital schematics and labelled ray fans.
