Traité d'astrologie.
A manuscript astrological treatise, the Traité d'astrologie, dated 1601 and written in French, likely for a learned reader of astronomy and astrology. Its pictures are hand-ruled octagonal diagrams with a nested square at the centre, lettered with a short caption, the initials D H M, and dense annotated figures in pen and brown ink, a precise geometric structure a designer could borrow for radial layouts, grids, and emblem frames.
