It was not until fifteen years later that the conscience of England won a victory over the organized capital engaged in the infamous traffic. It was the young and struggling Republic in America that led the way, and she led the way under the counsel and direction of Southern statesmen. American slave-holders were urging the abolition of the traffic while London merchants were using every effort to continue it, and while Bristol, the very headquarters of the trade, was represented in Parliament by Edmund Burke. Even among the literary men of England,--if Boswell's gossip may be trusted,--Dr. Johnson was peculiar in his hatred of the infamy--a hatred which is obsequious biographer mollifies to an "unfavorable notion," and officiously ascribes to "prejudice and imperfect or false information." The anti-slavery work of England was originally inspired from America, and the action of the British Parliament was really so directed as to make the prohibition of the slave-trade correspond in time with that prescribed in the Federal Constitution. The American wits and critics of that day did not fail to note the significance of the date, and to appreciate the statesmanship and philosophy which led the British Parliament to terminate the trade at the precise moment when the American Congress closed the market. The slaves in the United States numbered about seven hundred thousand when Washington's administration was organized. They had increased to four millions when Lincoln was chosen President. Their number in 1860 was less in proportion to the white population than it was in 1789. The immigration of whites had changed the ratio. But the more marked and important change had been in the value of slave labor. In 1789 the slaves produced little or no surplus, and in many States were regarded as a burden. In 1860 they produced a surplus of at least three hundred millions of dollars. The power of agricultural production in the Southern States had apparently no limit. If the institution of Slavery could be rendered secure, the dominant minds of the South saw political power and boundless wealth within their grasp. They saw that they could control the product and regulate the price of a staple in constant demand among every people on the globe. The investment of the South in slaves represented a capital of two thousand millions of dollars, reckoned only upon the salable value of the chattel. Estimated by its capacity to produce wealth, the institution of Slavery represented to the white population of the South a sum vastly in excess of two thousand millions. Without slave-labor, the cotton, rice, and sugar lands were, in the view of Southern men, absolutely valueless. With the labor of the slave, they could produce three hundred millions a year in excess of the food required for the population. Three hundred millions a year represented a remunerative interest on a capital of five thousand millions of dollars. In the history