“The speech was impressively delivered. The galleries of the Senate were densely crowded. Notwithstanding the inclemency of the weather, the ladies’ gallery was filled to overflowing. Mrs. Vice-President Hamlin and a party of her friends occupied seats in the diplomatic gallery, which was also filled. Secretaries Chase and Cameron occupied seats on the floor of the Chamber, where were also the French, Russian, Austrian, Prussian, Danish, and Swedish ministers. Lord Lyons was not present, as etiquette required that he should not be there on such an occasion. The speech was listened to with fixed attention by Senators Bright and Powell and ex-Senator Green. M. Mercier, the French minister, occupied a seat next to Mr. Bright, and exchanged salutations with Mr. Sumner at the conclusion of the speech, as did also most of the other foreign dignitaries. “Mr. Sumner’s speech has created a marked impression on the public in regard to himself. It has removed much prejudice that existed against him, and added greatly to his reputation as a profound statesman. The impression prevailed, that, with all his learning, his extraordinary acquirements, and splendid talents, he could not avoid the introduction of his peculiar views in reference to Slavery; and on account of the strong Antislavery proclivities of England hitherto, and the sympathy heretofore from this cause existing between leading English politicians and our own Antislavery men of Mr. Sumner’s class, it was apprehended by many that he would be inclined to lean towards Great Britain in this controversy. His course to-day was, therefore, an agreeable surprise. The absence of any allusion in his speech to the Negro Question demonstrated his ability and willingness to rise superior to the one idea attributed to him, and the scathing exposition of British inconsistency in regard to the right of search, and the dignified rebuke he administered to England, exhibited his capacity to regard public affairs with the eye of a genuine statesman. “The applause accorded to this really great production is universal and unqualified.” The correspondent of the _New York Evening Post_ gives the following sketch of the scene in a letter.