"Pzznt!" exploded Will, which seemed to get his vocal cords in shape again. "We'll fix 'em if they try any tricks!" "Now you're talking," said Jack. The boys lost little time in getting into the lake. They were splashing about in the water, when Jack, who happened to swim near shore, was startled by a cautious hail. He looked up, to see Budge Rankin half hidden in the grass, making signals to him. "What is it?" asked Jack. "Geasynow!" exclaimed Budge, in a hoarse whisper, tossing aside a wad of gum that he might talk more plainly. "Go easy about what?" asked Jack. "They're going to play a trick on you," said Budge. "Who?" inquired Jack, while the other boys, attracted by the conversation drew near. "Adrian Bagot and the two new students," went on Budge. "They're on their way here. Goin' t' steal your clothes an' make you late for th' lecture. I heard 'em talkin' about it. Thought I'd warn you. 'Sthmatterithfoolinem?" Budge had taken a fresh chew of gum, which accounted for the way in which he inquired what was the matter with fooling the enemy. "True for you!" exclaimed Sam. "How we going to do it?" Jack pondered a moment, idly splashing the water with his opened hand. Then he exclaimed: "I have it! How long before they'll be here, Budge?" "'Bout ten minutes I reckon." "Long enough. Come on boys." "What you up to?" asked Nat. "Say nothing but follow me," was all Jack replied. He scrambled up the bank to where he had left his clothes. Catching up the garments into a bundle he placed them further along the bank, on a little bluff that overlooked the edge of the lake. The clothes were in plain sight. "They'll see them there," objected Fred. "That's what I want," Jack replied. "Do as I do." Wondering what was up the others obeyed. Jack then ran to a small boathouse, close to the swimming place, and returned with three long, thin ropes, used to tie the craft to the dock. For a few minutes Jack's fingers flew nimbly. Then he placed three rope circles, hiding them well in the grass, each one just in front of each of the three piles of clothes. He carefully carried the long ends of the ropes down the bank and into the water. "Oh, I see!" exclaimed Sam, with a chuckle. "Say, this is great!" "Now, Budge," said Jack, when he had finished his preparations. "You hide in the bushes. When you think it's time, you toss a stone into the water. Do you understand?" "Betcherlife!" replied Budge, shortly. "Get down under the bank, then, fellows," said Jack to his companions. "Keep well in shore, and when you hear the stone splash, pull. That's all!" "But they may take our clothes," objected Will, who did not seem to understand. "I don't believe they will," replied Jack, grimly. The boys entered the water again, and, crouched close under the bank, sinking down so that only the tip of their noses were above the surface. It was almost impossible to tell they were there.