The field work was under charge of Mylius-Erichsen personally, a Danish explorer of ability and experience, already distinguished for successful work in northwestern Greenland. It was planned that near the eighty-second parallel of north latitude the main party should be divided, so as to complete the work that season. Lieutenant Koch was to outline the southeastern shore-lines of the land to the north of Greenland, while Mylius-Erichsen was to carry his surveys inland until they joined those of Peary, thus filling in the totally unknown regions of extreme northeastern Greenland. This plan was carried out in the spring of 1906, the two parties separating at Northeast Cape, whence Koch struck courageously north on May 1, with food for fourteen days only. Game fortunately came to him and he was enabled to advance his country's colors to an unprecedentedly northern latitude for Denmark, 83.5 deg. N., and by his explorations to complete the survey of the most northerly land of the globe--originally named Hazen Land, which is now known as Peary Land. The brilliant discoveries, tragic experiences, and heroic struggles of Mylius-Erichsen and his topographer Hagen, and the fidelity unto death of his Eskimo dog driver, Joergen Broenlund, are briefly outlined in this narrative. * * * * * After the long winter of sunless days and bitter cold, it was with high hopes and cheery hearts that the long line of dog-drawn sledges followed Mylius-Erichsen as they wended their way northward at the end of March, 1907. With ten sledges and nearly a hundred dogs much was to be done by the resolute men who feared neither cold nor famine, the dangers of the sea-ice, or the hardships of the trail. [Illustration: Amdrup and Hazen Lands, Greenland.] Their courage and strength were soon tested by difficulties and perils of unexpected character, for they thought to find the ordinary ice-foot along the shore, which could be followed inward or outward as the character of the ice dictated. But there was no ice-foot. Along Glacier Gulf for the distance of one hundred and forty miles the glacial ice-cap of Greenland, known usually as the _inland ice_, moves summer and winter--with unbroken vertical front, hundreds of feet in height--slowly but unceasingly into the Greenland Sea. Between the steady southward drift of the vast ice-fields from the Arctic Ocean and the seaward march of the glacier the shore ice was found to be of almost incredible roughness. Magnificent, and unequalled elsewhere in the world, was the sight of this towering sea-face, but scores upon scores of miles of ever-dominating ice-cliffs through their weeks of struggle grew to be unwelcome, so that their end at Lambert Land was hailed with joy.