There is an etching by Salvator Rosa, which seems so plainly to tell the story of the wandering artist's captivity, that it merits a particular description. In the midst of wild, rocky scenery, appears a group of banditti, armed at all points, and with all sorts of arms; they are lying in careless attitudes, but with fierce countenances, around a youthful prisoner, who forms the foreground figure, and is seated on a rock, with his languid limbs hanging over the precipice, which may be supposed to yawn beneath. It is impossible to describe the despair depicted in this figure: it is marked in his position, in the drooping of his head, which his nerveless arms seem with difficulty to support, and the little that may be seen of his face, over which, from his recumbent attitude, his hair falls in luxuriant profusion. All is alike destitute of energy and of hope, which the beings grouped around the captive seem to have banished forever by some sentence recently pronounced; yet there is one who watches over the fate of the young victim: a woman stands immediately behind him, with her hand stretched out, while her fore finger, resting on his head, marks him as the subject of discourse which she addresses to the listening bandits. Her figure, which is erect is composed of those bold, straight lines, which in art and nature, constitute the grand. Even the fantastic cap or turban, from which her long dishevelled hair has escaped, has no curve of grace; and her drapery partakes of the same rigid forms. Her countenance is full of stern melancholy--the natural character of one whose feelings and habits are at variance; whose strong passions may have flung her out of the pale of society, but whose womanly sympathies still remain unchanged. She is artfully pleading for the life of the youth, by contemptuously noting his insignificance; but she commands while she soothes. She is evidently the mistress or the wife of the chief, in whoso absence an act of vulgar violence may be meditated. The youth's life is saved: for that cause rarely fails, to which a woman brings the omnipotence of her feelings. SALVATOR ROSA AND MASSANIELLO. It was during the residence of Salvator Rosa in Naples, that the memorable popular tumult under Massaniello took place; and our painter was persuaded by his former master, Aniello Falcone, to become one of an adventurous set of young men, principally painters, who had formed themselves into a band for the purpose of taking revenge on the Spaniards, and were called "La Compagna della Morte." The tragical fate of Massaniello, however, soon dispersed these heroes; and Rosa, fearing he might be compelled to take a similar part in that fatal scene, sought safety by flight, and took refuge in Rome. SALVATOR ROSA AND CARDINAL SFORZA.