The shape of the hull in which I concluded that the motor power was placed seemed to be adapted to the navigation of the water as well as the air and in answer to our inquiries MacNair informed us that it could readily be converted into either a water craft or land carriage. The ordinary propelling power consisted of an ingenious combination of wings shaped like those of an insect, but when extraordinary speed was required there was a rudder-like appendage, similar to the tail of a fish, that was shot out from the hull. These were operated by electricity and appropriate mechanical contrivances. He further explained that the power of levitation, or rising in the air, did not depend entirely upon the wings, but, that by a discovery in magnetism, the vessel was rendered positive to the earth so that they mutually repelled each other. When all was ready, MacNair touched a button on the keyboard, and at once our aerial conveyance became instinct with life. Its broad wings that had been neatly folded, as it alighted upon the deck, now extended out like the pinions of some mighty bird, there was a slight whirring noise beneath our feet, and we began to ascend, moving as it were forward, around a spiral incline. As we circled around and arose to a place among the fleet which had hovered over us, we had a full view of the ample preparations which our deliverers had made for our rescue. On some of the ships we noticed cables and powerful dynamos. These vessels were as unlike the light and airy passenger boat on which we were embarked, as the ponderous freight train is unlike the lightning express. They had evidently come prepared to take charge of the Ice King as well as the crew. Polaris, Dione, Battell and Huston had embarked, and ascended a short distance, as if to be in a good position to give directions. The hospital attendants were carrying the afflicted sailors on board the Relief ship, on stretchers, with the exception of Pat O'Brien, who was getting around as lively as if there never had been anything the matter with him, and Mike seemed to be trying to keep him still. We were surprised at what seemed to be such a wonderful recovery, and MacNair, noticing the intense interest we were taking in what was transpiring on the Ice King, asked: "What is the matter? Anything going wrong?" "Nothing wrong," replied Captain Ganoe, "but something strange. Do you see that herculean sailor rushing around down there and evidently making himself useful in caring for his comrades?" "Well, what of that?" asked MacNair. "Only this," said the Captain, "a few hours ago he was confined to his bed with a severe attack of rheumatism and now he seems the personification of health and vigor. Can you explain the change in his case while the others are still helpless?"