Petronella. He immediately recommenced the study of his pictures; but for two whole years he was as far from understanding them as ever. At last, in the third year, a glimmer of light stole over his understanding. He recalled some expression of his friend the doctor, which had hitherto escaped his memory, and he found that all his previous experiments had been conducted on a wrong basis. He recommenced them now with renewed energy, and at the end of the year had the satisfaction to see all his toils rewarded. On the 13th January 1382, says Lenglet, he made a projection on mercury, and had some very excellent silver. On the 25th April following, he converted a large quantity of mercury into gold, and the great secret was his.
Nicholas was now about eighty years of age, and still a hale and stout old man. His friends say that by a simultaneous discovery of the elixir of life, he found means to keep death at a distance for another quarter of a century; and that he died in 1415, at the age of 116. In this interval he made immense quantities of gold, though to all outward appearance he was as poor as a mouse. At an early period of his changed fortune, he had, like a worthy man, taken counsel with his old wife Petronella, as to the best use he could make of his wealth. Petronella replied, that as unfortunately they had no children, the best thing he could do, was to build hospitals and endow churches. Nicholas thought so too, especially when he began to find that his elixir could not keep off death, and that the grim foe was making rapid advances upon him. He richly endowed the church of St. Jacques de la Boucherie, near the Rue de Marivaux, where he had all his life resided, besides seven others in different parts of the kingdom. He also endowed