POWER'S STATUE OF EVE is now-having been rescued from the waters off the coast of Spain--on the way to New York, and it will soon be here. The Prince Demidoff has purchased the figure of the Greek Slave, originally commenced for Mr. Robb of New Orleans, for £700, being £100 more than Mr. Robb was to have given for it. The Prince has placed it in a room by itself, in his palace at St. Donato, near Florence. He is one of the finest critics of art now living, and his collection of masterpieces constitutes to the man of taste one of the chief attractions of Italy. From a letter of Powers now before us, we learn that the model of his "America" was finished, and on the first of August the marble was about to be commenced, in the same size. This the sculptor and his friends think will be his greatest work. We are happy in being able to mention a fact eminently honorable to a distinguished American gentleman, in this connection. When the statue of Eve was lost, Powers wrote to the underwriters to pay the insurance ($6000) to Mr. J.S. Preston of South Carolina, upon whom the loss was to fall; but Mr. Preston instantly upon hearing the circumstance directed that every cent of the money should be sent to the artist, expressing only a regret that the country suffered the loss of a performance so admirable. Mr. Powers had not at this time heard of the loss of the statue of Mr. Calhoun. This great work has not yet been recovered, but Mr. Kellogg has still hopes of its being rescued in perfect safety. * * * * * The Venice _Statuto_ of the 13th August announces that Venice and Italy have experienced an irreparable loss. The celebrated Barbarigo Gallery, known for ages, comprised amongst other masterpieces seventeen paintings of Titian, the Magdalen, Venus, St. Sebastian; the famous portraits of the Doge Barbarigo, of Philip XIV., &c. After the extinction of the Barbarigo family, Count Nicholas Giustiniani, the brothers Barbaco, and the merchants Benetti, who became proprietors of the collection, presented it to the Government. The Viceroy Raniere offered it for sale in 1847 to the Austrian Government, which refused to buy it. It has been lately purchased by the Court of Russia for five hundred and sixty thousand francs. * * * * * PAINTING AND SCULPTURES of the early northern artists from the eighth to the sixteenth century have just been discovered in great numbers in Gothland, by Dr. Marilignis, of the Stockholm Royal Academy of Fine Arts. He was sent to search for them by the Academy, and has spent eighteen months in his mission. A large proportion of the pictures were found in chapels built during the eleventh and twelfth centuries, and were covered with thick coats of plaster, which had to be removed with great care. The results of Dr. Marilignis' investigations will be published by the Swedish Government. * * * * *