The 19th was a brilliant day of yellow sunlight. The season was now so far advanced that the sun, circling as always in this latitude around and around the heavens, was above the horizon nearly half the time, and during the other half there was almost no darkness—only a gray twilight.
The temperature this day was in the minus fifties, as evidenced by the frozen brandy and the steam-enshrouded dogs; but bubbles in all my spirit thermometers prevented a definite temperature reading. These bubbles were caused by the separation of the column, owing to the jolting of the thermometer with our constant stumbling over the rough ice of the polar sea. The bubbles might be removed at night in camp, but this required some time, and the accurate noting of temperatures during our six or seven weeks' march to the Pole and back did not seem sufficiently vital to our enterprise to make me rectify the thermometer every night. When I was not too tired, I got the bubbles out.
Again Marvin, who was still pioneering the trail, gave us a fair march of fifteen miles or more, at first over heavy and much-raftered ice, then over floes of greater size and more level surface. But the reader must understand that what we regard as a level surface on the polar ice might be considered decidedly rough going anywhere else.
The end of this march put us between 85° 7´ and 85° 30´, or about the latitude of our "Storm Camp" of three years before; but we were twenty-three days ahead of that date, and in the matter of equipment, supplies, and general condition of men and dogs there was no comparison. Bartlett's estimate of our position at this camp was 85° 30´, Marvin's 85° 25´, and my own 85° 20´. The actual position, as figured back later from the point where we were first able, by reason of the increasing altitude of the sun, to take an observation for latitude, was 85° 23´.
In the morning Bartlett again took charge of the pioneer division, starting early with two Eskimos, sixteen dogs, and two sledges. Borup, a little later, with three Eskimos, sixteen dogs, and one sledge, started on his return to the land.
I regretted that circumstances made it expedient to send Borup back from here in command of the second supporting party. This young Yale athlete was a valuable member of the expedition. His whole heart was in the work, and he had hustled his heavy sledge along and driven his dogs with almost the skill of an Eskimo, in a way that commanded the admiration of the whole party and would have made his father's eyes glisten could he have seen. But with all his enthusiasm for this kind of work, he was still inexperienced in the many treacheries of the ice; and I was not willing to subject him to any further risks. He had also, like MacMillan, frosted one of his heels.
It was a serious disappointment to Borup that he was obliged to turn back; but he had reason to feel proud of his work—even as I was proud of him. He had carried the Yale colors close up to eighty-five and a half degrees, and had borne them over as many miles of polar ice as Nansen had covered in his entire journey from his ship to his "farthest north."
I can still see Borup's eager and bright young face, slightly clouded with regret, as he turned away at last and disappeared with his Eskimos and steaming dogs among the ice hummocks of the back trail.
A few minutes after Borup went south, Henson with two Eskimos, three sledges, and twenty-four dogs began to follow Bartlett's trail to the north. Marvin and myself, with four Eskimos, five sledges, and forty dogs, were to remain in camp twelve hours longer in order to give Bartlett one march the start of us. With the departure of Borup's supporting party, the main expedition comprised twelve men, ten sledges, and eighty dogs.
From this camp on, each division comprised three men instead of four; but I did not reduce the division daily allowance of tea, milk, and alcohol. This meant a slightly greater individual consumption of these supplies, but so long as we kept up the present rate of speed I considered it justified. With the increasing appetite caused by the continuous work, three men were easily able to consume four men's tea rations. The daily allowance of pemmican and biscuit I could not increase. Three men in an igloo were also more comfortable than four, and the smaller igloos just about balanced in time and energy the lesser number of men that were left to build them.