"I suppose, Doctor, that you were in some of the great battles?" asked Fred. "Yes, I was in the battles of Chickamauga, Missionary Ridge, through the Atlantic campaign; then under General Geo. H. Thomas we marched back into Tennessee, fought a desperate battle at Franklin, and a few weeks later annihilated the army at Nashville. While we were doing this, Sherman was making his renowned march to the sea. But I'll spin you some of my experiences before we get back home. Let's join the ladies." "I should never tire hearing your war stories," said Fred. "Yes; and you would be the first one to go to sleep if I should tell you of the battle of Chickamauga or Missionary Ridge." This Fred stoutly denied. "All right," said the Doctor. "I'll test you one of these evenings." "The sooner the better," replied Fred. "And now let's have some music." They sang several anthems and choruses, and all retired at an early hour, except Denison, who stood watch. CHAPTER IX. In the Heart of Labrador. The central room of the cabin was called the 'engine room.' It was fifteen feet square, with a hole three feet in diameter in one corner, now securely covered. It was used for lowering or hoisting objects through while the globe was at anchor. An aluminum frame or cage, attached to a windlass by a chain of the same material, was used for this purpose. A powerful coil steel spring operated the windlass. In each of the other corners of the room were anchors of aluminum, also attached to windlasses and worked by steel springs. There was a dynamo that afforded abundance of light for the ship. This, too, was run by spring power. The rooms of the cabin were brilliantly lighted, and the spiral stairway, from the foot of the mast which stood upon the center of the floor of the engine-room, was illuminated by several lights, up to the observatory itself. At the top, or ball of the mast, was a light of thirty-two hundred candle power. Altogether, the ship must have been at night an object of terrific splendor to the observer below. Will was the originator of the steel-springs motor idea, and he daily attended to winding them with great faithfulness and pride. And it was a most invaluable adjunct to the comfort and success of the expedition, as will be seen before the end of this history is reached. At daylight, on the following morning, all were up and looking out upon wild Canadian forests. Here and there were small towns and settlements, but they realized that they were fast hastening beyond the pale of civilization. The wind had moved during the night into the southwest, and the Professor informed them that they were sailing at the rate of more than thirty miles an hour.