Die Geheimsymbole der Chemie und Medicin des Mittelalters : eine Zusammenstellung der von den Mystikern und Alchymisten gebrauchten geheimen Zeichenschrift, nebst einem kurzgefassten geheimwissenschaftlichen Lexikon / von G.W. Gessmann.
A German-language 1899 reference compiled by G. W. Gessmann and published in Graz, cataloguing the secret symbols that medieval alchemists and mystics used for chemical substances, metals and remedies. The plates are numbered Tafel plates of symbol tables, each entry naming a substance in German, Latin, French and Italian alongside its glyph. A designer could draw on the dense, hand-ruled arrangements of planetary, metal and alchemical signs as raw material for occult or esoteric graphics.
