Virginia and Maryland slaves are sold at New Orleans yearly, and yet he tells us that slavery is not a national question! Eighth--How did they admit Missouri into the Union with slaves? Were they Southern votes which admitted it? No! But they were the votes of recreant New Englanders--false to the principles of freedom, who sold the honor of their country, and with it the liberty of thousands of human beings in Missouri--or at least consented to their bondage. And yet it is not a national question! He (Mr. T.) would last refer to the remarks of a constitutional lawyer, who was able, eloquent, sincere, and high minded. Mr. T. then read the following extract:-- Such thoughts (referring to the judgments to be expected) habitually crowd upon me when I contemplate those great personal and NATIONAL evils, from which the system of operations (vis., the movements of the Colonization Society) which I stand here to advocate, seems to offer us some prospect of deliverance. From that day (1698) till the present, there have flourished in our country, men of large and just views, who have not ceased to pour over this subject a stream of clear and noble truth, and to importune their country, by every motive of duty and advantage, to wipe from her escutcheon, the stain of human tears. It is generally known, that the original members of the American Colonization Society anticipated, that, at some future period, the General Government, and some, if not all the State Governments, would co-operate in their exertions for the removal of an evil which was obviously NATIONAL in all its aspects.