Alpetragii Arabi Planetarum theorica phisicis rationibus probata, nuperrime Latinis litteris mandata a Calo calonymos Hebreo Neapolitano
A 1531 Latin printed treatise on planetary astronomy by the Arabic astronomer Alpetragius, translated from Arabic by the Hebrew scholar Calo Calonymos of Naples for scholars and students of cosmology. Its pages are dense black-letter text with geometric diagrams of nested circles, lettered with points and arcs, showing how planetary orbits were modelled on spheres. A designer might take from them the precise, rule-drawn look of early scientific diagrams, with overlapping circles and small letter labels set against plain text blocks.
