A brighter day now dawned upon Poussin. What had happened to him, which would have been regarded by most young artists as the greatest misfortune and sunk them in despondency and ruin, proved of the greatest advantage to him. The Cardinal Barberini having returned to Rome, gave him some commissions, which he executed in such an admirable manner as at once established his reputation among those of the greatest artists of the age. The first work he executed for his patron was his celebrated picture of the Death of Germanicus, which Lanzi pronounces one of his finest productions. He next painted the Taking of Jerusalem by Titus. These works gave the Cardinal so much satisfaction that he procured for him the commission to paint a large picture of the Martyrdom of St. Erasmus, for St. Peter's, now in the pontifical palace at Monte Cavallo. These works procured him the friendship and patronage of the Cav. del Pozzo, for whom he painted his first set of pictures, representing the Seven Sacraments, now in the collection of the Duke of Rutland. He afterwards painted another set of the same, with some variations, for M. de Chantelou, formerly in the Orleans collection, now in that of the Marquis of Stafford. POUSSIN'S INVITATION TO PARIS. In 1639, Poussin was invited to Paris by Louis XIII., who honored him on this occasion with the following autograph letter, which was an extraordinary and unusual homage to art: "DEAR AND WELL BELOVED, "Some of our especial servants having made a report to us of the reputation which you have acquired, and the rank which you hold among the best and most famous painters of Italy; and we being desirous, in imitation of our predecessors, to contribute, as much as lies in us, to the ornament and decoration of our royal houses, by fixing around us those who excel in the arts, and whose attainments in them have attracted notice in the places where those arts are most cherished, do therefore write you this letter, to acquaint you that we have chosen and appointed you to be one of our painters in ordinary, and that, henceforward, we will employ you in that capacity. To this effect our intention is, that on the receipt of this present, you shall dispose yourself to come hither, where the services you perform shall meet with as much consideration as do your merits and your works, in the place where you now reside. By our order, given to M. de Noyers, you will learn more particularly the favor we have determined to shew you. We will add nothing to this present, but to pray God to have you in his holy keeping. "Given at Fontainebleau, Jan. 15, 1639."