THE GOLDEN CALF, Which the WORLD 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 in 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. London, Printed for John Starkey at the Mitre in Fleetstreet near Temple-Barr, 1670. To the most Excellent D. THEODORUS KETJES, by his many Peregrinations, a most famous Phisician, and an happy Practitioner of Medicine at Amsterdam, One of my Intimate Friends. ALSO, To the most Noble, most Excellent, and most Experienc'd, and Accurate Searchers into the Vulcanian Anatomy, D. JOHN CASPARUS FAUSIUS, Counsellor, and Chief Physician of the most Serene Elector Palatine of HEIDELBERG. AND D. CHRISTIAN MENTZELIUS, Principal Physician in the Court of the most Serene Elector of BRANDENBURG: My Reverend Patrons, and intire Friends. The Epistle DEDICATORY: Most Noble, most Excellent, most Expert, and most Accurate Inspectors of the Vulcanian Anatomy, and my most real FRIENDS. Although I neither was willing, nor able to be wanting to my honoured Friends, yet would not divulge and bring to light the Verity of the Spagirick Art, but by this most precious, and Miraculous Arcanum, which I not only saw with these Eyes, but taking a little of the transmutatory powder, I myself also transmuted an Impure Mass of Lead volatile in the Fire, into fixed Gold, constantly sustaining every Examen of Fire: in such wise, as henceforth it can no more be suspected by any Man, no not by those, who unto this day have perswaded themselves and others, that this Arcanum is given to no man: but contrarily we were fully and indubitately perswaded, that, in things of Nature, The Mercury of Philosophers is Primo-material, and is like a Fountain overflowing with wonderfull Effects, and those escaping every acuteness, and Light of Human reprehensible Reason, as shall be evidenced in this my little work: which I was willing to dedicate and consecrate to you, my Primary Patrons, as to most prudent Masters, and Defenders. Yet in the mean while, I pray consider, that I have not writ to the end I would teach any one, that Art, which I my self know not, but only that I might recite the true Process of this Arcanum. For, what can more confirm, and Patronize Verity, than the true Light of Truth it self? It is the property of Brute Animals to pass their life in Silence, and especially not to heed those things in them, which do most of all look to, and are