The golden calf, which the vvorld adores, and desires: : in which is handled the most rare and incomparable wonder of nature, in transmuting metals; viz. how the intire substance of lead, was in one moment transmuted into gold-obrizon, with an exceeding small particle of the true philosophick stone. At the Hague. In the year 1666. Written in Latin by John Frederick Helvetius, doctor and practitioner of medicine at the Hague, and faithfully Englished