De auri tinctura, sive, Auro potabili vero : quid sit & quommodo differat ab auro potabili falso & sophistico : quomodo spagyrice praeparandum & quomodo in medicinâ usurpandum
A Latin alchemical and medical treatise on potable gold by the German chemist Johann Rudolf Glauber, printed in Amsterdam by Johannes Janssonius in 1651 for physicians and practitioners of spagyric medicine. The sole illustration is a woodcut tailpiece: a heart-shaped mass of scrolling tendrils, dots and small buds tapering to a beaded pendant, usable as a chapter-end ornament or a compact centred device.
