Page:South - the story of Shackleton's last expedition, 1914-1917.djvu/121

 meat for the dogs. Seal-liver made a welcome change in our own menu. The two bulls were marked, like many of their kind, with long parallel scars about three inches apart, evidently the work of the killers. A bull we killed on the following day had four parallel scars, sixteen inches long, on each side of its body; they were fairly deep and one flipper had been nearly torn away. The creature must have escaped from the jaws of a killer by a very small margin. Evidently life beneath the pack is not always monotonous. We noticed that several of the bergs in the neighbourhood of the ship were changing their relative positions more than they had done for months past. The floes were moving.

Our position on Sunday, October 3, was lat. 69° 14′ S., long. 51° 8′ W. During the night the floe holding the ship aft cracked in several places, and this appeared to have eased the strain on the rudder. The forenoon was misty, with falls of snow, but the weather cleared later in the day and we could see that the pack was breaking. New leads had appeared, while several old leads had closed. Pressure-ridges had risen along some of the cracks. The thickness of the season's ice, now about 230 days old, was 4 ft. 5 in. under 7 or 8 in. of snow. This ice had been slightly thicker in the early part of September, and I assumed that some melting had begun below. Clark had recorded plus temperatures at depths of 150 and 200 fathoms in the concluding days of September. The ice obviously had attained its maximum thickness by direct freezing, and the heavier older floes had been created by the consolidation of pressure-ice and the overlapping of floes under strain. The air temperatures were still low, -24.5° Fahr. being recorded on October 4.

The movement of the ice was increasing. Frost-smoke from opening cracks was showing in all directions during October 6. It had the appearance in one place of a great prairie fire, rising from the surface and getting higher as it drifted off before the wind in heavy, dark, rolling masses. At another point there was the appearance of a train running before the wind, the smoke rising from the locomotive straight upwards; and the smoke columns elsewhere gave the effect of warships steaming in line ahead.