Le cueur de philosophie : translate de latin en francoys a la requeste de Philippes le bel roy de France
A 1538 French translation, printed in Paris by Jean Petit, of Johannes de Sacrobosco's Latin cosmology treatise Sphaera mundi, prepared for Philippe le Bel's court and issued as a popular astronomy handbook. The pictures are plain woodcut diagrams: circles divided into zones, a calendar wheel of dominical letters, and an armillary-style sphere with zodiac signs, set beside decorated initials and dense black-letter text. A designer could draw on their clean geometric linework, radial layouts and zodiac glyphs.
