While holding out this tempting bait to merchants, manufacturers, and the moneyed classes generally, Mr. Stanley declines to dilate upon the advantages of the Congo basin as a field for immigration. That portion of it which in his view "is blessed with a temperature under which Europeans may thrive and multiply" is at present inaccessible to settlers. It is "the cautious trader, who advances, not without the means of retreat," who is to act as the pioneer and the missionary of civilization, stimulating and directing the industry of the natives. The suppression of the internal slave-trade is another object to be aimed at,--one which Mr. Stanley, in an address recently delivered in London, held up as capable of accomplishment by an outlay of five thousand pounds a year. What rebate should be made, on this point and on others, from the anticipations which a sanguine temperament, that has enabled its possessor to struggle with so many difficulties and to achieve so many enterprises, would naturally tend to heighten and render glowing, is a question that may be reserved for those whom it directly concerns. Equatorial Africa is not likely ever to become the home of a white population, but it need not for that reason be left to "stew in its own juice." On the contrary, it offers on that very account a fit subject for the experiment, which has nowhere yet been adequately tried, of developing latent capacities for progress in races that have raised themselves above the level of absolute savagery without attaining to those ideals which, never wholly realized, are essential to continuous improvement. It has been found easy to enslave, to debase, to exterminate races in this condition, while the ill success of efforts to enlighten and elevate them has led to the inference that this is impracticable. The trial, however, will not have been made till the counteracting influences have ceased to act, or at least to predominate, and time has been allowed for hidden forces that may possibly exist to be called into play. As Mr. Stanley observes, "It is out of the fragments of warring myriads that the present polished nations of Europe have sprung. Had a few of those waves of races flowing and eddying over Northern Africa succeeded in leaping the barrier of the equator, we should have found the black aboriginal races of Southern Africa very different from the savages we meet to-day."