This great artist expired at Fontainbleau on the 2d day of May, 1519, aged sixty-seven years. His health had been gradually failing for several years, and Vasari relates, that Francis I. having honored him with a visit in his dying moments, Lionardo, deeply affected at this testimony of his regard, raised himself in the bed to express his thanks and gratitude, when falling back exhausted, the King caught him, and he expired in his arms. DA VINCI’S LEARNING. Lionardo da Vinci was one of the most learned, accomplished, and eminent men of the 15th century. Hallam says of him, “The discoveries which made Galileo and Kepler, Maestlin, Maurolicus, Castelli, and other names illustrious, the system of Copernicus, the very theories of recent geologists, are anticipated by Lionardo da Vinci, within the compass of a very few pages, not perhaps in the most precise language, or on the most conclusive reasoning, but so as to strike us with something like the awe of preternatural knowledge. In an age of so much dogmatism, he first laid down the grand principle of Bacon, that experiment and observation must be the guides to just theory in the investigation of nature.” His scientific knowledge proved the means of conferring incalculable benefits upon the art of painting, one of the most important of which was the invention of the chiaro-scuro. His intimate acquaintance with mathematical studies enabled him to develope greatly the knowledge of optics, and no one was better acquainted with the nature of aërial perspective, which became a distinctive and hereditary characteristic of his school. Lanzi says, “Being extremely well versed in poetry and history, it was through him that the Milanese school became one of the most accurate and observing in regard to antiquity and to costume. Mengs has noticed that no artist could surpass Vinci in the grand effect of his chiaro-scuro. He instructed his pupils to make as cautious a use of light as of a gem, not lavishing it too freely, but reserving it always for the best place. And hence we find in his, and in the best of his disciples’ paintings, that fine relief, owing to which the pictures, and in particular the countenances, seem as if starting from the canvass.” DA VINCI’S WRITINGS.