The magnificent plan of the "Milton Gallery" originated with Fuseli, was countenanced by Johnson the bookseller, and supported by the genius of Cowper, who undertook to prepare an edition of Milton, with translations of his Latin and Italian poems. The pictures were to have been engraved, and introduced as embellishments to the work.--The Gallery was commenced in 1791, and completed in 1800, containing forty-seven pictures. "Out of the seventy exhibited paintings," says Cunningham, on which he reposed his hopes of fame, not one can be called commonplace--they are all poetical in their nature, and as poetically treated. "Some twenty of these alarm, startle, and displease; twenty more may come within the limits of common comprehension; the third twenty are such as few men could produce, and deserve a place in the noblest collections; while the remaining ten are equal in conception to anything that genius has hitherto produced, and second only in their execution to the true and recognised masterpieces of art. It cannot be denied, however, that a certain air of extravagance and a desire to stretch and strain, are visible in most of his works. A common mind, having no sympathy with his soaring, perceives his defects at once, and ranks him with the wild and unsober--a poetic mind will not allow the want of serenity and composure to extinguish the splendor of the conception; but whilst it notes the blemish, will feel the grandeur of the work. The approbation of high minds fixes the degree of fame to which genius of all degrees is entitled, and the name of Fuseli is safe." SALVATOR ROSA. This celebrated painter was born at Renella, a small village near Naples, in 1615. There is so much fiction mingled with his early history, that it is impossible to arrive at the truth. It is certain, however, that he commenced the study of painting under his brother-in-law, Francesco Fracanzani, that he passed his early days in poverty, that he was compelled to support himself by his pencil, and that he exposed his juvenile performances for sale in the public markets, and often sold them to the dealers for the most paltry prices. SALVATOR ROSA AND CAV. LANFRANCO.