516.2 Luigi de' CONTI [Ludovicus de Comitibus]. Clara fidelisque admonitoria disceptatio practicę manualis experimento veraciter comprobata. De duobus Artis, & Naturę miraculis: Hoc est de Liquore Alchaest; nec non Lapide Philosophico, atque amborum materia, operandi ratione, Difficultate, Viribus, ac inter se Convenientia, & Discrimine, De Salis quoque Tartari Volatii, &c. In gratiam Hermeticae Artis Studiosorum conscripta. 12° Francofurti: Apud Hermannum ą Sande 1664 Ferguson Young Nat Union Cat Wisconsin 1. Frontispiece engraving. 112x66mm. "A.M.D.G. Symbolum adeptorum". An equal armed cross stands in front of a source radiating light. The arms of the cross are associated with the Sun, Moon, Mercury and Sulphur. The text below states "Finis principii est Principium finis".] 2. Engraved titlepage. 112x65mm. On the top of two pillars are two cherubs, between which is a double-headed eagle. In front of the left pillar is a woman holding a globe in her left hand, and a small angel with a quill pen in her right. In front of the right pillar is a winged angel holding a trumpet, and she points downward with her left hand. Her garment has eyes and flowers upon it.]