Chapter 46—The Polar Spring The prisoners were set free; they expressed their joy by the warmth of their thanks to the doctor. Johnson regretted somewhat the skins, which were burned and useless; but his regret did not sour his temper. They spent the day in repairing the house, which was somewhat injured by the explosion. They took away the blocks heaped up by the animals, and the walls were made secure. They worked briskly, encouraged by the cheery songs of the boatswain. The next day the weather was much milder; the wind changed suddenly, and the thermometer rose to +15°. So great a difference was soon felt by both man and nature. The southerly wind brought with it the first signs of the polar spring. This comparative warmth lasted for many days; the thermometer, sheltered from the w