Tamango meanwhile, locked up with the other slaves, continually exhorted them to make one great effort to regain their liberty. He spoke to them of the small number of the white men, and called their attention to the increasing carelessness of their guards; and, without going into details, he promised them that he would find some way of leading them back to their country. He boasted of his knowledge of the occult sciences, for which the black races have great veneration, and declared that any who refused to assist in the attempt would incur the wrath of the devil. All these harangues were delivered in the dialect of the Peules, which was known to most of the slaves, but which the interpreter did not understand. Such was the credit of the dreaded orator, and so inveterate was their habit of obeying him, that his eloquence worked wonders, and he was begged to fix a day for their emancipation long before he had even had time to work out all his plans. So he told the conspirators vaguely that the time was not yet come, and that the devil, who appeared to him at night, had not yet given the word; but he bade them hold themselves in readiness for the first signal. In the meantime he did not lose any opportunity of testing the vigilance of the crew. One day he saw a sailor leaning over the side of the vessel watching a shoal of flying-fish which were following the ship. Tamango took the rifle which had been left standing against the gunwale, and began to handle it, mimicing grotesquely the exercises he had seen the sailors do. The rifle was immediately taken from him, but he had learnt that it was possible to touch a weapon without at once arousing suspicion. When the time came for him to use one in earnest, woe betide the man who tried then to wrest it from him! One morning Ayché threw him a biscuit, making at the same time a sign which he alone understood. The biscuit contained a small file, and on that tool hung the success of the plot. Tamango took good care not to let his companions see the file; but, when night had fallen, he began to utter unintelligible sounds, accompanied by weird gestures. Gradually he became more and more excited, and the mutterings increased to loud groans. As they listened to the varied intonations of his voice, the slaves felt convinced that he was engaged in an animated conversation with an unseen person. They were all terrified, not doubting that the devil was at that moment in their midst. Tamango put the finishing touch to the scene by exclaiming joyfully-- "Comrades! the spirit which I have conjured has at length fulfilled his promises, and I hold in my hand the talisman which is to save us. Now you only need to summon up a little courage, and you are free men." Those near him were allowed to feel the file, and not one of them was sharp enough to suspect that the whole thing was a gross imposture.