Ease and prosperity now rather stimulated than relaxed his exertions. Choosing for his subject the Flaying of St. Bartholomew, he painted that horrible martyrdom with figures of life-size, so fearfully truthful to nature that when exposed to the public in the street, it immediately attracted a crowd of shuddering gazers. The place of exhibition being within view of the royal palace, the eccentric Viceroy, Don Pedro de Giron, Duke of Ossuna, who chanced to be taking the air on his balcony, inquired the cause of the unusual concourse, and ordered the picture and the artist to be brought into his presence. Being well pleased with both, he purchased the one for his own gallery, and appointed the other his court painter, with a monthly salary of sixty doubloons, and the superintendence of all decorations in the palace. RIBERA'S DISCOVERY OF THE PHILOSOPHER'S STONE. Ribera seems to have been a man of considerable social talent, lively in conversation, and dealing in playful wit and amusing sarcasm. Dominici relates that two Spanish officers, visiting at his house one day, entered upon a serious discussion on the subject of alchemy. The host, finding their talk some what tedious, gravely informed them that he him self happened to be in possession of the philosopher's stone, and that they might, if they pleased, see his way of using it, the next morning at his studio. The military adepts were punctual to their appointment, and found their friend at work, not in a mysterious laboratory, but at his easel, on a half-length picture of St. Jerome. Entreating them to restrain their eagerness, he painted steadily on, finished his picture, sent it out by his servant, and received a small rouleau in return. This he broke open in the presence of his visitors, and throwing ten gold doubloons on the table, said, "Learn of me how gold is to be made; I do it by painting, you by serving his majesty--diligence in business is the only true alchemy." The officers departed somewhat crest-fallen, neither relishing the jest, nor likely to reap any benefit from it. RIBERA'S SUBJECTS. His subjects are generally austere, representing anchorets, prophets, apostles, &c., and frequently of the most revolting character, such as sanguinary executions, martyrdoms, horrid punishments, and lingering torments, which he represented with a startling fidelity that intimidates and shocks the beholder. His paintings are very numerous, and his drawings and etchings are highly esteemed by connoisseurs. RIBERA'S DISPOSITION.