2595 Tractatus chymicus antiquissimus & vere aureus, in quo spectare licet fundamenta ferę chymię, nec non figuram verissimam hermeticam, et facillimam viam ad medicinam universalem, cum curiosis quatuor epistolis cuiusdam adepti, in lucem datus ab uno Vverę chymię amatore. 8° Augustę Vind.: apud David Reymund Mertz, & Joann Jacob Mayer 1721 Young Wisconsin [Illustration:- Frontispiece woodcut. 88x90mm. Shows 'a most true Hermetic figure', in the form of a circle containing a square. The four cardinal points of the circle relate to fire and earth, sulphur and salt, while four divisions of the circle correspond to the four qualities. The contained square has triangles erected on each of its sides. Two of these are associated with the elements air and water, while the square itself has a circle at its centre with the statement 'Convert the elements and you will make the quintessence'.]