Kane determined to lead the next party himself, and near the end of April, 1854, with seven men he attempted to lay down an india-rubber boat high up on the Greenland coast. He had, however, sadly overrated the strength of his men and of himself. About eighty miles from the brig, near Dallas Bay, one man broke down entirely and four others were partly disabled, and their cache was made at that point with many misgivings, as bears had destroyed the stores laid down the previous autumn. The troubles of the party now commenced, for Kane, fainting while making an observation, had to be hauled back by the disabled men. Despite the moderate temperature Kane's left foot froze, his limbs became rigid and badly swollen, fainting spells were more frequent, and he fell into alternate spells of delirium and unconsciousness, in which state his broken-down sledge crew conveyed him by forced marches to the brig, where, says Hayes, the surgeon, he arrived nearly insensible and so swollen by scurvy as to be hardly recognizable, and in such a debilitated state that an exposure of a few more hours would have terminated his life. Kane's wonderful recuperative powers speedily restored him from his nearly helpless condition to a state of comparative good health, but he could not conceal his evident inability to personally attempt further sledge journeys that spring. In this emergency he decided to send his surgeon, Dr. I. I. Hayes, to explore the western shore of Smith's Strait, from Cape Sabine northward, and for this purpose detailed Godfrey with the seven best dogs available. The ice over Smith's Sound was extremely rough, so that progress was slow and tedious. Finally, with his provisions nearly exhausted, Hayes reached land in the vicinity of Dobbin Bay and made his farthest at Cape Hayes, which, according to his observations, was in about 79° 45´ N. Hayes was stricken with snow-blindness; the journey was extremely exhausting; Godfrey broke down, and the dogs were so nearly worn out that at the last camp they abandoned sleeping-bags, extra clothing, and everything except arms and instruments. Kane says that both men were snow-blind on arrival at the brig, and the doctor, in a state of exhaustion, had to be led to his bedside to make his report. Impressed with Hayes's success on the west shore of Smith's Sound, Kane decided to send Morton northward on the Greenland side so as to determine the extent of the frozen channel seen by Hayes from his farthest. Morton was supported by a sledge party of four men, who reached Humboldt glacier after ten days' travel, and were here joined by Esquimau Hans with a dog-sledge. On the 18th the supporting party turned homeward, while Morton and Hans, with a dog-sledge, started northward, travelling about five miles distant from and parallel with the face of Humboldt glacier.