The Eskimos did everything they could to persuade him not to cross to the island. They told him that in 1848 more than one hundred men had perished of starvation there, and added that no one could find sufficient food to keep them through the summer. Yet the fearless soldier and his friends insisted on making the attempt, and some of the Eskimos were daring enough to go with them. It seemed doubtful whether they could even get across the strait. Every few steps some man would sink into the ice-pack up to his waist and his legs would dangle in slush without finding bottom. The sledges would sink so that the dogs, floundering and scrambling, could not pull them. The men had to push the dog-teams along, and after the first day's travel they were all so exhausted that they had to rest the whole of the next day before they could start on again. Finally they reached the opposite shore of the strait, and, while the natives built igloos and hunted, the Americans searched for records of Franklin's party. They found enough traces to prove that the men who had sought the Northwest Passage had spent some time on this desolate strip of land. More than once they were in danger of starvation. In the spring the Eskimos hunted wild ducks, which they found in remote stretches of water. Their way of hunting was to steal up on a flock of the birds, and, as soon as the ducks took alarm, to rush toward the largest bunch of them. The hunter then threw his spear, made with three barbs of different lengths, and caught the duck on the sharp central prong. The long wooden shaft of the spear would keep the duck floating on the water until the hunter could seize it. But as summer drew on, and the ducks migrated, food grew very scarce. Once or twice they discovered bears, which they shot, and when there was nothing else to eat they lived on a small black berry that the Eskimos called _parawong_, which proved very sustaining. As the white men tramped day after day over the icy hillocks their footwear wore out, and often walking became a torment. In telling of their march Gilder said, "We were either wading through the hillside torrents or lakes, which, frozen on the bottom, made the footing exceedingly treacherous, or else with sealskin boots, soft by constant wetting, painfully plodding over sharp stones set firmly in the ground with the edges pointed up. Sometimes as a new method of injury, stepping and slipping on flat stones, the unwary foot slid into a crevice that seemingly wrenched it from the body." When they had nothing else to eat the white men lived on the same food as the native hunters. This was generally a tallow made from the reindeer, and eaten with strips of reindeer meat. A dish of this, mixed with seal-oil, was said to look like ice-cream and took the place of that dessert with the Eskimos. Lieutenant Schwatka said, however, that instead of tasting like ice-cream it reminded him more of locust, sawdust and wild-honey.