Theo Swift dropped into a chair before the blazing fire in the log cabin, and drew a long breath of delight. At last his dream had come true; he was in the heart of the Maine woods It was a wonderful experience for a boy of his age to be his father's companion on a fishing trip. Each spring when Dr. Swift had packed his tackle for his annual vacation into the wilderness, and Theo had looked on with hungry eyes as the rods, flies, and tramping boots had been stowed away in the canvas grips, his father had said: "Wait until you are a bit older, son, and you shall go with me."