Since we had reached longitude 180°, we had been oscillating from one side to the other but had made considerable progress toward the north, indicating that the ice was sloughing away in that direction while the main body was held against some obstruction, by the force of the currents. My own observations all the time had shown that we were oscillating, and these compared with observations made by Battell, one-hundred and fifty miles west, where this movement was much more apparent, gave us reliable data on which to make calculations. At the present time, the sloughing off of the ice was evidently much more rapid on the west and hence our position was tending more than ever toward the east of the longitudinal line on which we lay. From the observations we had made we calculated that the obstruction against which the ice-field had lodged, was about one degree due north of our present position. We closely examined the seam in which we lay and found numerous indications of its weakness. In many places, where the walls of the closing channel had not come into close contact, we found open water for considerable distances, where the fish were making their appearance. On the theory which Captain Battell had evolved, it did not seem difficult to prognosticate just where the break would first make its appearance, and some of the contingencies which would confront us when that time came. Within a few days, notwithstanding our very small force, everything was ready for the emergency we anticipated and now we anxiously awaited the storm that would sunder the ice-field and release us from our long imprisonment. But the weather remained calm while it was steadily growing colder and we began to fear that we would be locked in the ice for another winter. At last, however, a stiff breeze set in from the southwest and the barometer began to fall, indicating an approaching storm. Immediately every man was at his post, but hours passed away and the wind did not increase. The order was given for every man to remain at his post and be ready to act as soon as the alarm should be sounded. As no special duty had been assigned to me, I retired to my quarters in the library to take a much needed rest and was soon asleep. CHAPTER V. THE BREAK--A RACE FOR LIFE--THE ISLAND--STRANGE TOWER--A SAFE HARBOR--CROSSING THE OPEN POLAR SEA--STRANGE PHENOMENA--SAILING SOUTH--HORIZON OBSCURES FAMILIAR CONSTELLATIONS--RETURN TO THE TOWER--NO EXPLANATION--OFF FOR THE POLE AGAIN--A WONDERFUL DISCOVERY. [Illustration] I WAS startled from my slumbers by the alarm and sprang to my feet. The strong breeze that had been blowing from the southwest had increased to a gale and the hissing of the steam revealed the fact that sufficient warning had been given to enable the engineer to be ready to start the machinery as soon as the parting of the ice gave us an opening through which we could move. The time for action had come and I heard Battell give the order to cut the cables.