Charles, the prince royal, is twenty-six years of age; he is the king's third son, and is beloved by all who approach him. His figure is said to be noble, and his face most pleasing in expression; his manners are mild, and he is very accessible; he wins all hearts to love him. He has lived in Poland since his infancy, and hence loves the people, and speaks their language wonderfully well. Educated at the court of our republic, he is neither proud nor humble, but maintains a happy medium with every one. The king, recognizing all these qualities in his son, sent him to many foreign courts, beginning with that of St. Petersburg. Relying upon the aid of Muscovy, he desired that his son should make his first essay in arms under that power; besides which, he had other ends in view. He hoped that Charles would be made duke of Courland, a duchy tributary to Poland. In 1737 the czarina Anna appointed the count de Biren governor of Courland, but some years later he fell into disgrace, and was sent to Siberia with his family. The dukedom was consequently vacant during several years. Our king, who had the right so to do, conferred the dignity upon his son, but the sanction of the court of St. Petersburg was required, and no one could have been more likely to obtain what he desired than the prince royal himself, for the fascination of his manners had become proverbial. He accordingly went to St. Petersburg, remaining on his way some time at Mittau, the capital of Courland, where he succeeded in winning the esteem and affection of the inhabitants of the duchy. The czarina soon after confirmed the nomination of the prince royal. Her consent was formally announced to the king of Poland during the past year, at the time of the session of the diet. But according to the fatal custom which so often rends our councils, that assemblage was dissolved by a nuncio from Wolhynia named Podhorski, and the affair in which Courland was so deeply interested was not discussed. It then became necessary to refer it to the senate, where it occasioned many fierce debates. The prince Czartoryski especially endeavored to embroil the question by maintaining that the king had no right to dispose of the duchy without the consent of the diet; that Biren could not be degraded from the dignity conferred upon him without having been properly tried, judged, and condemned; and finally, that the nomination of the prince royal could only be provisional, or valid during the lifetime of the czarina. These foolish clamors were rendered powerless by an imposing majority; one hundred and twenty-eight white balls, against five black ones, decided in favor of Prince Charles. The diploma has already been presented to him by the grand chancellor of the crown, and the ceremony of investiture takes place to-day. The rejoicings in Warsaw must be truly magnificent, and I am quite sure that all are delighted.