Few particulars are recorded of this adept. He dwelt at Prague with a lord of the Court, and, falling sick, he perceived that his immediate death was inevitable. In this extremity he wrote a letter to his chosen friend Richtausen, at Vienna, begging him to come and abide with him during his last moments. On the receipt of this letter, Richtausen set out, travelling with all expedition, but, on arriving at Prague, he had the mortification to find that the adept was no more. He inquired diligently if he had left anything behind him, and he was informed by the steward of the nobleman with whom he had lodged that a powder alone had been left, which the nobleman seemed anxious to preserve, but which the steward did not know how to use. Upon this information, Richtausen adroitly got possession of the powder, and then departed. The nobleman, hearing of the transaction, threatened to hang his steward if he did not recover the powder, and the latter, judging that no one but Richtausen could have taken it, pursued him, well-armed. He overtook him on the road and presented a pistol to his head, saying he would shoot him if he did not return the powder. Richtausen, seeing there was no other way to preserve his life, acknowledged his possession of the treasure, and pretended to surrender it, but, by an ingenious contrivance, he abstracted a considerable quantity. He was now the owner of a substance the value of which was fully known to him. He presented himself to the Emperor Ferdinand III., who was an alchemist, and who, aided by his mine-master, Count Russe, took every precaution in making projection with some of the powder given him by Richtausen. He converted three pounds of mercury into gold with one grain. The force of this tincture was one upon 19,470. The emperor is said to have caused a medal to be struck, bearing the effigy of Apollo with the caduceus of Mercury, and the motto--_Divina metamorphosis exhibita Praguæ, Jan. 15, anno 1648, in præsentia Sac. Cæs. Majest. Ferdinandi Tertii_. The reverse bore another inscription--_Raris hæc ut hominibus est ars; ita raro in lucem prodit, laudetur Deus in æternum, qui partem suæ infinitæ potentiæ novis suis abjectissimis creaturis communicat_. Richtausen was ennobled by the title of Baron Chaos.