The DUNCAN was a steam yacht of the finest description. She was 210 tons burden--much larger than any of the first vessels that touched the shores of the New World, for the largest of the four ships that sailed with Columbus was only 70 tons. She had two masts and all the sails and rigging of an ordinary clipper, which would enable her to take advantage of every favorable wind, though her chief reliance was on her mechanical power. The engine, which was constructed on a new system, was a high-pressure one, of 160-horse power, and put in motion a double screw. This gave the yacht such swiftness that during her trial trip in the Firth of Clyde, she made seventeen miles an hour, a higher speed than any vessel had yet attained. No alterations were consequently needed in the DUNCAN herself; John Mangles had only to attend to her interior arrangements.

His first care was to enlarge the bunkers to carry as much coal as possible, for it is difficult to get fresh supplies _en route_. He had to do the same with the store-rooms, and managed so well that he succeeded in laying in provisions enough for two years. There was abundance of money at his command, and enough remained to buy a cannon, on a pivot carriage, which he mounted on the forecastle. There was no knowing what might happen, and it is always well to be able to send a good round bullet flying four miles off.