The citations just made introduce a topic upon which anti-slavery men have usually abounded in sweeping assertion; the actual effects of our system on our industrial concerns. A fair example of these assertions may be seen in Dr. Wayland, Moral Science, p. 210, (Boston, 1838:) "No country, not of great fertility, can long sustain a large slave population. Soils of more than ordinary fertility cannot sustain it long, after the first richness of the soils has been exhausted. Hence, slavery in this country is acknowledged to have impoverished many valuable districts; and hence it is continually migrating from the older settlements to those new and untilled regions, where the accumulated manure of centuries of vegetation has formed a soil, whose productiveness may, for a while, sustain a system at variance with the laws of nature. Many of our free, and of our slaveholding States, were peopled about the same time. The slaveholding States had every advantage, both in soil and climate, over their neighbours; and yet the accumulation of capital has been greatly in favour of the latter," etc. The points asserted here are, that Northern men have grown rich faster than Southern men; that slavery has so starved itself out by its wasteful nature, as to be compelled to migrate from "many valuable districts," to virgin soils; and that it is slavery which exhausts those virgin soils. Each of these statements is absolutely false. That the first and most important of the three is so, we have just shown, by the overwhelming testimony of fact. Southern citizens have accumulated capital faster than Northern, in the ratio of six hundred and sixty to three hundred and forty-six. And the manner in which these thrice refuted lies are obtruded, may fairly illustrate the morality with which anti-slavery men have usually conducted their argument against us That a conceited, pragmatical Yankee parson should be misled by rancourous prejudice around him, and by the concessions of foolish Southerners, to publish such statements thirty years ago, on a subject of which he knew nothing, is not very surprising. But surely Dr. Wayland, President of Brown University, Christian Divine, Instructor of youth, and _Teacher of Ethicks_,(_!_) would hardly have been expected to continue to print the falsehoods in successive editions of his work, after three successive _census returns_ had utterly exploded them.