At the end of the second winter two relief ships appeared at the edge of the ice with orders that Captain Scott should return home at once. The _Discovery_ was still sealed up in the harbor with solid ice from twelve to seventeen feet thick, and it was a problem how to free the vessel. The solid ice extended out more than six miles from the harbor. The crews set resolutely to work making holes in the ice in a direct line from the imprisoned vessel to the open water. In these holes powerful explosives were placed which cracked the ice. This labor consumed some nine days. Then the great ocean swells broke up the ice, freeing the vessel. The _Discovery_ forthwith sailed for England by way of Cape Horn, arriving home in September, having gathered much valuable information during her sojourn in the south polar regions. Although practically no vegetable life has been found in these regions, an abundance of animal life exists in or contiguous to the sea, dependent on shrimps, fish, and such other life as the sea affords. Seals, penguins, petrels, cormorants, and gulls are found in considerable numbers. In fact, no persons tarrying in these regions need starve for lack of food, such as it is. [Illustration: The penguin defies the cold] During the two years spent by the _Discovery_ in the south polar ice, seals and penguins formed staple articles of the diet of the men. Though the flesh of both of these creatures has a strong and peculiar flavor, it was found to be an agreeable change from pemican and other preserved material. So vigorous were the men's appetites, stimulated by the excessive cold, that when they labored hard sometimes seven meals were served daily. Because of the thick layer of fat covering their bodies, penguins were used as fuel when the coal began to give out. Penguins are strange, interesting sea fowls having an inquisitive and fearless nature. At one of the rocky shore rookeries millions of these grotesque birds were seen. The type of penguin found here is a very handsome bird, decked out in rather gay colors, having a jet black head, bluish-gray back and wings, a yellow breast and bright spot of orange on the neck, and an orange-colored lower bill. As though proud of his multicolored dress he walks with slow and majestic step. His height is about four feet and his average weight eighty-five pounds. He makes free use of his voice which is loud and shrill. Whenever a group of penguins see an object that excites their curiosity they will stand around it in a circle and gaze at it intently. Lieutenant Shackleton had a graphophone as a part of his equipment, and whenever it was used, during the season when penguins were about, they used to gather around the instrument by the hundreds, seeming to be quite as much interested as his human listeners.