'There is not a sane man in the free states, who does not wish the world rid of slavery.' This Mr. B. states as his conviction, page 15. Perhaps it is correct, but if so, there are a great many _insane_ men in the free states, or a great many who have a very strange way of manifesting their wishes. The fact is notorious, that Northern men who remove to the South, almost uniformly become slaveholders the moment their convenience or pecuniary interest can thereby be promoted. On page 20, Mr. B. accuses Garrison of having written placards to stir up a mob against him, when he lectured in Boston, in behalf of colonization. A charge more utterly false was never made, and it requires a great exercise of charity to believe that Mr. B. did not know its falsehood. It will have been seen that Mr. Thompson challenged proof of the accusation, but none was produced except the word of the accuser--evidence on which, any reader who compares his assertions in several other instances, with facts, will place very little reliance. Another of Mr. B's accusations against 'some of the friends of the Anti-Slavery Society,' is, that they procured a writ to take the two 'African princes,' who had been sent to the Maryland Colonization Society to be educated, and that Elizur Wright was the instigator of the measure, on pretence that the boys had been kidnapped. See page 20. The truth of this matter as given in the Emancipator, on Mr. Wright's authority, is that, on learning that two native African boys, supposed to be slaves, were on board a schooner in New York harbor, bound for Baltimore, Mr. Wright made inquiries on board, and could only learn that they were brought from Africa by a passenger, and consigned to some one in Baltimore. To make sure of the means of prosecuting a legal inquiry, a writ was obtained, but as soon as Mr. W. discovered that the lads were sent to this country to be educated, he ordered the officer _not to serve it_. The next slanderous charge uttered by the reverend delegate is, that Elizur Wright tried to stir up a mob to liberate a fugitive slave confined in New York prison. The story of course is wholly false. In the second evening's discussion, Mr. B. says, page 34, the admission of a clause into the Constitution prohibiting the abolition of the slave trade for twenty years, 'was one of the brightest virtues in the escutcheon of America,' A dark escutcheon, then, must be hers, if the protection of the slave trade for twenty years is the 'brightest' spot on it. The 'importation of such persons,' &c. (meaning slaves,) 'shall _not_ be prohibited prior to 1808,' says the Constitution, 'The brightest virtue in her escutcheon!' exclaims Mr. Breckinridge.