Fratris Rogeri Bacon, Ordinis Minorum, Opus majus ad Clementem Quartum, Pontificem Romanum
Roger Bacon's Opus majus, a Latin philosophical and scientific treatise addressed to Pope Clement IV, printed in London by William Bowyer in 1733 with notes by Samuel Jebb. The pictures are sparse: a grid of geometric diagrams of circles, triangles and lines in ruled cells, a dense page of tabulated numerical columns, and a printed index page with a decorative coat-of-arms ornament, which suggest the designer might draw on early modern scientific diagrams, tabular layouts and heraldic ornament.
