Every kind of scientific instruments, charts, maps, globes, cameras, etc., had been selected with the greatest care. Among the special supplies were the balloons to which Captain Ganoe had referred. These were small and could be inflated at short notice. They were designed to be sent up from time to time with accounts of the expedition, its progress, discoveries etc., hermetically sealed. It is well known that at the equinoxes, the heated air from the tropics ascends to the higher altitudes and flows toward the poles, while the cold air flows toward the equator to fill the vacuum, producing the equinoctial storms. These little balloons were expected to be carried south by the winds, and find a resting place on the land surface where they might be picked up by civilized people; or if they fell into the water, the bottles would preserve the dispatches and the ocean currents might carry them into civilized countries. Thus every precaution was taken to secure to the world the benefit of any discovery that might be made, even though the expedition should be lost. I was well pleased with my quarters. All the surroundings would be, to me, most satisfactory, no matter what the trials and dangers that we might encounter. I was enlisted for the expedition, and in the position I preferred above all others, as it brought me into frequent consultation with the commander, and I should be able to acquaint myself with his present views and feelings and note what changes had taken place since I saw him last. I lost no time in having my trunks brought on board and made ready for the voyage. The Ice King was soon at sea. We stopped at one of the Aleutian Islands where we took on our dog teams, which were to be used for explorations on the ice. The sledges were so constructed that they might readily be converted into boats that would accommodate the whole crew and a good supply of provisions, in case we should be compelled to abandon the ship. We expected to be locked up in the ice during the winter, but with our sledges and dog teams, we could continue our explorations for long distances in every direction, with the ship for headquarters. Captain Battell was a whaler and familiar with all the methods of Arctic travel. His long experience on these northern waters enabled him to forsee many of the dangers we were likely to meet, and to make the needful preparations to overcome them.