In the Advent season of 1865, a young Jewish convert preached in the _Schotten-Kirche_ a short course of the most eloquent sermons it has ever been our privilege to hear in any language or any land whatever. His name is Marie-Bernard Bauer, and his family, of Hungarian descent, is among the most influential and wealthy of those settled in Vienna. The Jews of that city have indisputably as large a share of the talent as of the riches of the country. The oldest brother of young Bauer is one of the greatest bankers in Austria. At an early age, the young Jew, fiery and enthusiastic, and already gifted with singular eloquence, threw himself into the ranks of the Revolution, and became one of its most ardent emissaries. At eighteen, he was entrusted with important missions and considered a rising Freemason. But during his travels he became acquainted with a young Frenchman, a zealous Catholic, whose influence and friendship laid the foundations of his conversion. He visited his friend’s mother, also, who by her example more even than her exhortations contributed to the work of grace begun in his soul by her son’s solicitations. Bauer wore, at the request of these two, a medal of the Immaculate Conception; and we need scarcely remind our Catholic friends of the part this blessed badge fulfilled in the conversion of another illustrious Jew, the Père Marie Ratisbonne, the founder of the _Dames de Sion_, who has since devoted his life to the instruction and conversion of Jewish girls at Jerusalem. After being fully instructed in the faith, Bauer required nothing but grace to believe. Being at Lyons with several worldly acquaintances, he happened to be standing on a prominent balcony, on the feast of Corpus Christi. The procession of the Blessed Sacrament was to pass below, and they, with cigars in their mouths and mockery in their hearts, were waiting for the pageant. No change came to the young Jew until the canopy under which the priest carried the Divine Host was close beneath the balcony. The change at that moment was lightning-like. Faith entered his heart, or rather--as he himself reluctantly admitted when pressed by his superiors at a later time to lay aside false humility and declare the works of God in his soul--a conviction so absolute that it distanced faith made itself felt throughout his whole being. The same _knowledge_, so to speak, returned to him many times since while consecrating at Mass, and he said that he could not _believe_ merely, in a matter of which he was so blissfully and unerrably _certain_. As Jesus passed, Bauer threw himself on his knees and professed himself a Christian. A very short time elapsed before he entered the novitiate of the Carmelite Friars. His mother, who was living in Paris, endeavored to see him, but was refused access to him by his superiors. Later on, when he had passed through the novitiate, he might have seen her, had it not been for the machinations of his family. For five years every