Could not make the double march today, it is such a long distance from No. 5 to No. 4. Was obliged to cross over ice rafting beneath our feet. The trail failed in many places and hard to find. Very cold last night, must have been at least 60° below as the Esquimaux could not sleep. They all wanted to turn in together in one igloo to keep warm but I protested against eight in one igloo; we would have been warm!