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A marked tendency of the present era is the domination of the tropics by the temperate zone; the white man finds it little hardship, indeed he is eager to take up the burden of managing the destinies of his less enlightened brethren. But it is becoming manifest that the policy of conferring the blessings of civilization on the dark-skinned races, and of benevolently assimilating the regions in which they live, can not be an enduring success until medical science has cleared the way and made these countries habitable for the white man. It is becoming realized that the enduring conquest of the tropics is not to be accomplished without the initiative aid of the scientific bacteriologist; it is in his hands that the essential power lies; when he has done his work the others may safely go ahead.
That this sentiment is just, one must conclude who notes, for instance,
A VERY REAL WORLD POWER.. JAMA. 1907;XLIX(25):2088–2089. doi:10.1001/jama.1907.02530250040005
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