"If I had but one reason, why I consented to appear here, it was because, at this moment, I believe it belongs to the colored man in this country to say that his lot is a common one 'with every white man north of the Potomac River; and if you ask me who are my clients, I think I may answer, 'Every man north of Mason and Dixon's line, without reference to his complexion.' I have read in the newspapers that one or two distinguished men of this city propose to spend the coming summer in Europe. Born in Boston, educated at Harvard, having been dandled in the lap of Massachusetts favor and Massachusetts popularity, they are about to travel in Europe, among despotisms, monarchies, aristocracies, and oligarchies; and I trust in God they may learn, as they travel in those countries, that it is an everlasting disgrace that on the soil on which they were born, no man of color can stand and be considered free. If they shall learn no more than this, I will wish them a pleasant and prosperous tour; and unless they shall learn this, I hope they will come back and have the same padlock put upon their lips that is put upon men south of Mason and Dixon's line. "I want to ask this large audience, Mr. Chairman, through you, supposing the citizens of Boston should call a meeting to-morrow, and resolve that, in the event of a southern man, with southern principles, being elected to the presidential office, this state will secede, how would the State of Mississippi receive it? Now, I am here to ask that the non-slaveholding states shall dare to do, and write, and publish, and resolve, in behalf of freedom, as the slaveholders dare to act and resolve in behalf of slavery.