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 "Seaboard Slave States," p. 647.) They may be less subject to epidemic and infectious diseases, and yet be more liable to other fatal disorders, due to such influences, than whites. The worst climate for unacclimated whites of any town in the United States is that of Charleston. (This, together with the whole of the rice coast, is clearly exceptional in respect of salubrity for whites.) It happens fortunately that the most trustworthy and complete vital statistics of the South are those of Charleston. Dr. Nott, commenting upon these, says that the average mortality, during six years, has been, of blacks alone, one in forty-four; of whites alone, one in fifty-eight. "This mortality" he adds, "is perhaps not an unfair test, as the population during the last six years has been undisturbed by emigration, and acclimated in greater proportion than at any previous period." If the comparison had been made between native negroes and native or acclimated whites alone, it would doubtless show the climate to be still more unfavourable to negroes.

Upon the very district to which Mr. Russell refers, as offering an extreme case, I quote the testimony of a Mississippi statistician:—

"The cotton-planters, deserting the rolling land, are fast pouring in upon the 'swamp.' Indeed, the impression of the sickliness of the South