1268.5 Christoph Heinrich KEIL. Compendiöses doch vollkommenes philosophisches Hand-Büchlein, das ist: Philosophische Grund-Sätze zur Universal-Tinctur auf Menschen und Metallen... übereinstimmen... Bayreuth und Hof: verlegts Johann Gottlieb Vierling 1748 [Illustration:- Frontispiece engraving. "Project der Kunst". Double ouroboros of winged and unwinged snake each biting one another's tails. Within in a circle bearing a variation of the Vitriol acrostic "Visitetis interiora terra rectifando invenietis occultum Lapidem veram Medicinam". Within this is a square with the four elements, and within this a triangle with the three principles in its vertices, and the sun and moon around the triangle. Within this is a circle labelled "Confusa Materia sive Chaos: Natura". Below is "Omnia in Omnibus".]