The fresh fish were indeed a welcome addition to the table that night, the boys having their share. "We'll have to try this sport to-morrow," decided Will, when he had cleaned off his plate the second time. "They're great!" Accordingly the next day the boys chopped holes in the ice, and with baited hooks attached to springy branches, set in the ice, with a piece of cloth, that, by its bobbing gave indication of a bite, planned for a big catch. The visual signals enabled each lad to set several hooks. But either they were not in the right place, or they did not use the right bait, for two small fish were all they caught. "Those lumbermen have them hypnotized," complained Will. "I'm going up to their fishing grounds to-morrow." The other boys said they would accompany him. This left the girls to their own devices, since they did not care to go with the boys. "Who's for a walk in the woods?" asked Mollie, and they all were eager to come along. In their short skirts and leggings they found it easy going, even in comparatively deep snow. "Oh, it's great to be an outdoor girl!" exulted Betty, as she trudged along beside Grace. "Yes. I wonder if Carrie Norton, the girl who fell out of the tree, would like this?" ventured Amy. "She was a real outdoor girl, too," observed Mollie, reflectively. Carrie, however, who figured largely in the third book of this series, had gone, as has been said, to live with a distant relative. Occasionally she wrote to her young friends. The girls had gone about a mile, or perhaps two, from their camp, and were nearing the debatable ground where Mr. Jallow claimed a valuable strip of timber. Grace was just about to warn her companions not to trespass, when Amy called attention to something in the woods a short distance off. "See the cute little log cabin!" she cried. "Let's see if any one lives there." "If they do they must be frozen!" declared Mollie. "It is full of chinks and cracks." They approached closer to it. It was not like any log cabin they had ever seen, consisting, as they could see through the open door, of but one room. "It's probably only a hunter's lean-to," said Betty. "Don't go too close, Amy." But Betty spoke too late. Curious to see the whole interior of the cabin, Amy stepped across the threshold. A moment later she heard something move behind her. She turned, but not in time. An instant later a raised, sliding door of heavy logs slid down in grooves, and Amy was a prisoner. "Oh--Oh!" she cried out. "What has happened?" and she beat on the heavy logs with her little hands. "Oh dear!" "It's a trap! You're in a bear trap!" cried Betty. "We must go for help!" CHAPTER XVI TROUBLE The girls were stunned for a moment. After Amy's first frantic cry, and Betty's realization of the danger, and the way out, there came, as there often does following a shock, a period of lethargy.