Disquisitio de helia artium ...
A 1606 Latin treatise by Raphael Eglin, printed in Leipzig by Johann Rosa for a scholarly readership, on alchemical and occult learning drawn from the Paracelsian tradition. The pictures are sparse woodcut and typographic devices: a square diagram with a central triangle, a Leipzig imprint with a seven-planet star chart inside a circle bearing planetary glyphs, and a small ornamental head with scrolling cartouche, all in a dense black-letter page layout a designer could borrow for hermetic or esoteric motifs.
