The public has, however, a sense of justice, which can never be entirely perverted. Since the time when Clarkson, Wilberforce and Fox made the horrors of the slave-trade understood, the slave-captain, or slave-jockey, is spontaneously and almost universally regarded with dislike and horror. Even in the slaveholding states it is deemed disreputable to associate with a professed slave-trader, though few perhaps would think it any harm to bargain with him. This public feeling makes itself felt so strongly, that men engaged in what is called the African traffic, kept it a secret, if they could, even before the laws made it hazardous. No man of the least principle could for a moment think of engaging in such enterprises; and if he have any feeling, it is soon destroyed by familiarity with scenes of guilt and anguish. The result is, that the slave-trade is a monopoly in the hands of the very wicked; and this is one reason why it has always been profitable. Yet even the slave-_trade_ has had it champions--of course among those who had money invested in it. Politicians have boldly said that it was a profitable branch of commerce, and ought not to be discontinued on account of the idle dreams of benevolent enthusiasts. They have argued before the House of Commons, that others would enslave the negroes, if the English gave it up--as if it were allowable for one man to commit a crime because another was likely to do it! They tell how merciful it is to bring the Africans away from the despotism and wars, which desolate their own continent; but they do not add that the white man is himself the cause of those wars, nor do they prove our right to judge for another man where he will be the happiest. If the Turks, or the Algerines saw fit to exercise this right, they might carry away captive all the occupants of our prisons and penitentiaries. Some of the advocates of this traffic maintained that the voyage from Africa to the slave-market, called the Middle Passage, was an exceedingly comfortable portion of existence. One went so far as to declare it "the happiest part of a negro's life." They aver that the Africans, on their way to slavery, are so merry, that they dance and sing. But upon a careful examination of witnesses, it was found that their singing consisted of dirge-like lamentations for their native land. One of the captains threatened to flog a woman, because the mournfulness of her song was too painful to him. After meals they jumped up in their irons for exercise. This was considered so necessary for their health, that they were whipped, if they refused to do it. And this was their dancing! "I," said one of the witnesses, "was employed to dance the men, while another person danced the women." These pretences, ridiculous as they appear, are worth about as much as any of the arguments that can be brought forward in defence of any part of the slave system.