W.S. MOUNT, the only artist among us who can delineate "God's image carved in ebony," or mahogany, has just finished a picture in his happiest style. It represents a genuine sable Long-Islander, whom a "lucky throw" of the coppers has made the owner of a fat goose. He holds his prize in his hands, his dusky face radiant with joy as he snuffs up in imagination the fragrant odors to come. The details of the picture--the rough coat, the gay worsted comforter and cap, disposed with that native tendency to dandyism, which forms so conspicuous an element of the negro character, are admirably painted. The effect, like that of every true work of art, and unlike that of the vulgar and brutal caricatures of the negro which abound, is genial and humanizing. The picture is in possession of Messrs. Goupil and Company, 239 Broadway, by whom it will soon be sent to Paris, to be lithographed in a style uniform with the "Power of Music," and "Music is Contagious," of the same artist. This house will soon publish engravings from one of WOODVILLE'S characteristic pictures, "Politics in an Oyster House," and from SEBRON'S two admirable views of Niagara Falls. W.H. POWELL is in Paris, at work on his large picture for the Capitol at Washington. He has recently finished "The Burial of Fernando de Soto in the Mississippi," of which a fine print, executed in Paris by Lemoine, has been published. The committing of the body of the grand old enthusiast to the turbid current of the Father of Waters, of which he was the discoverer, is a splendid subject, and is treated by Powell in a manner full of deep poetic feeling. Prof. HART, of Philadelphia, one of our most elegant belle-lettre scholars, is preparing a volume of "The Female Prose Writers of America." It is to form a royal octavo of five hundred pages, elegantly printed, with numerous portraits, executed in London, in the best style of line and stipple engraving. We are authorized to state that the Editor will be happy to receive from authors and their friends materials for the biographical and critical notices. Mrs. HALE'S "Female Biography," from which we furnished some extracts in our last Number, is nearly ready for publication. It will form a large octavo of about eight hundred pages, containing numerous authentic portraits.