MR. GEORGE THOMPSON said, the work he had to do in reference to the last speech was by no means great or difficult. They had heard a great many things stated by Mr. Breckinridge on the great question in debate, but every one of these had been stated a thousand times before, and answered again and again within the last sixty years. Within these very walls they had heard many of them brought forward and refuted within the last four years. But there was one part of his opponent's speech to which he would reply with emphasis. And he could not but confess that he had listened to that one part of it with surprise. He knew Mr. Breckinridge to be the advocate of gradual emancipation; he (Mr. Thompson) had therefore come prepared to hear all the arguments employed by the gradualists, urged in the ablest manner, but he had not been prepared to hear from that gentleman's lips the things he had heard--he did not expect that the foul charge of stirring up a mob against Mr. Breckinridge for advocating the principles of colonization, would be brought against William Lloyd Garrison. But they would here see the propriety and utility of his calling upon his opponent to leave generalities and come to something specific--to lay his finger on a fact which could be examined and tested circumstantially. And what did they suppose was the truth in the present case? Simply this, that when Mr. Breckinridge came forward to explain the principles of the Maryland colonization scheme, the noisy rabble who sought to mob, did so only so long as they were under the impression that he was an abolitionist. Mr. B. and his brother, who was along with him on that occasion, did their best to let the meeting know that they were not abolitionists but colonizationists, and whenever the mob learned that, they became quiet. This was the fact in regard to that case--he would willingly stake the merits of the whole question on the truth of what he had just stated, and he would call on Mr. B. to say whether it was not true; he would call on him to exhibit the placard which had been written by Mr. Garrison, or tell what it contained. He had a copy of the Liberator of the day referred to, and he would ask him to point out a single word in it which could be found fault with. He would dare Mr. B. to find a single sentence in that paper calculated to stir up a mob, or to induce any one to hurt a single hair of his head. With regard to the Maryland colonization scheme, he was not going to enter upon its discussion at that hour of the evening, but the next evening, if they were spared, he would endeavor to show the gross iniquity of that scheme, recommended as it was by Mr. Breckinridge. In the mean time, to return to the next charge, they were told of an active abolitionist--Elizur Wright. And here he would at once say, that it was too bad to bring such a charge against an individual like Elizur Wright, than whom he knew no man, either on this or the the other side