Michaelis Majeri Viatorium, hoc est, De montibvs planetarvm septem seu metallorum : tractatus tam utilis, quàm perspicuus, quo, ut indice mercuriali in triviis, vel Ariadnêo filo in labyrintho, seu cynosurâ in oceano chymicorum errorum immenso, quilibet rationalis, veritatis amans, ad illum, qui inmontibus sese abdidit De Rubea-petra Alexicacum, omnibus medicis desideratum, investigandum, uti poterit
Michael Maier's Viatorium, a Latin alchemical treatise on the seven mountains of the planets and their metals, printed at Oppenheim in 1618 by Hieronymus Galler for the publisher Johann Theodor de Bry and aimed at learned physicians and alchemical adepts. The plates here are letterpress ornament rather than emblems: horizontal headpiece strips of dense foliate scrollwork with birds and beasts, a triangular tailpiece built around a horned satyr mask and strapwork cartouches, and inhabited initials holding vases and dragons — useful as borders, rules and drop caps at small sizes.
