On the evening of New Year's Day, 1909, the Pole was only 172½ miles distant, but the men's strength was nearly exhausted. The thermometer remained obstinately below zero, and on 6th January there were over 50 degrees of frost, with a blizzard and drift. A last dash onwards followed, and on 9th January Shackleton and his party reached 88° 23' S., and left the Union Jack flying on the plateau. The attempt to reach the Pole had failed; but it was a gallant attempt, and the homeward marches that followed show clearly enough that to have advanced farther was beyond the powers of the men. Indeed, the return journey was a terrible experience--a grim struggle against starvation; and to add to the misery of it, dysentery--owing, in Shackleton's opinion, to eating diseased pony's meat--attacked each member of the party. All that was possible had been done, and had not the wind been behind the explorers during one of their acutest periods of suffering, it is improbable that they would ever have reached their winter quarters. While Shackleton was making his great march, a party, consisting of David, Mawson, and Mackay, had set out, with a view to determining the position of the south magnetic Pole. In this they were successful, the mean position of the magnetic Pole being marked down by Mawson as in latitude 72° 25' S., longitude 155° 16'. This was a great triumph for the explorers, and, needless to say, it was not gained without many perilous adventures and narrow escapes. In March, 1909, the _Nimrod_ returned safely to Lyttelton, New Zealand, where Shackleton and his men met with the warmest of welcomes. Once again the South Pole had resisted the attempt to locate it, but the time was drawing near for its mysteries to be disclosed. IV When, on September 13, 1909, Captain Scott published his plans for a British Antarctic expedition in the following year, Roald Amundsen was not thinking about the Far South. The _Fram_, it is true, was being prepared for a third voyage, but the Arctic was again to be her destination. Then, during the September of 1909 came the news that Peary had reached the North Pole. One of the great secrets of the world had been revealed; but another was still undiscovered, and Amundsen's thoughts were promptly turned from the Arctic to the Antarctic. For various reasons Amundsen did not announce his change of plans, and when the _Fram_ sailed in August, 1910, only a very few people knew where she was bound for. Not until the ship left Madeira did Amundsen announce his destination to the men who were accompanying him, and they received the news with joy.