After the adjournment he devoted himself to a new and unfamiliar task. He prepared an article for Harper's Magazine on the slavery question and its relation to party politics, in which he defended his position, explained his philosophy and sought to throw light on this confused subject. The article made some stir at the time. It contained nothing, however, which he had not already said much better in his speeches. He was not a man of literary culture or habits. His thought was brightest and his eloquence highest when the battle was raging. The article had the good fortune to provoke a rather elaborate anonymous reply from Jeremiah S. Black, Buchanan's Attorney-general. Black was a profound lawyer and better writer than Douglas. While he would have been no match for him in senatorial debate or on the stump, he completely eclipsed him as a literary controversialist. Moreover, Black was standing on firm ground, simply insisting that his party accept the decision of the Supreme Court as law and conform its conduct to it without evasion or pettifoggery; while Douglas was striving to stand in mid-air, nullifying the decision by clever tricks and condemning as anarchists the Republicans, who frankly confessed their hostility to it. He gravely argued that Congress could grant to a territorial legislature power which the Constitution denied to itself. Black's answer was crushing and showed conclusively that there was no basis in either law or logic for those peculiar doctrines in which Douglas differed from his party. Black judiciously avoided all discussion of the ethics of the question, confining himself to an examination of the legal basis of Douglas' special creed, proving clearly that it had been utterly swept away.