...Two of these gentlemen were Messrs. Mason and Slidell, formerly members of the U. S. Senate, who were now bound to Europe as commissioners from the Confederate Government to the Courts of England and France ; the other two were Messrs. Eustis and McFarland, attaches to the commissioners. The Trent was one of a line of British steamers which ran regularly between Vera Cruz and Havana, thence to St. Th...