What was thus said by Cardinal Manning has been since confirmed by his Eminence Cardinal Lavigerie, Archbishop of Algiers and Carthage, when recently in London, engaged in a righteous crusade to be preached by him in all the Capitals of Europe. This African prelate, from his own knowledge, during the last thirty years, as missionary and as prelate, gave terrible details of the slave trade, as the curse of that dark continent. The Cardinal says that the traffic can never be stopped, except by force, and if the Governments of Europe cannot effect this, he advocates a voluntary crusade of men, ready to form armed colonies of blacks to protect the missionaries of religion and civilization, and to defend the slave regions from the murderous raiders who invade them. The success of Emin Pasha who has for ten years kept the whole of his great Equatorial province free from the ravages of the slave-hunters shows what can be done. But for the shameful abandonment of Gordon at Khartoum, the slave trade would at this time have been almost at an end, and the grand desires of Livingstone for the peace and welfare of Africa would have been accomplished. Let us hope that Cardinal Lavigerie's visit may not be in vain so far as England is concerned. He came quietly and went quietly, only paying two visits after his public appearance at Prince's Hall, one to the Marquis of Salisbury, and the other to the Prince of Wales. To return to the Guildhall, the loyal and hearty thanks of the meeting were offered to His Royal Highness, on the motion of the Lord Mayor, seconded by Sir Thomas Fowell Buxton, and carried by acclamation. The Prince, in reply, said:--