“Well,” continued Clarence, “I suppose you fellows are in high feather, now that vacation has come, and you can break away?”

“Sure we are,” replied Jack, trying to seem good-natured; though secretly he was wondering what the other had concealed up his sleeve, and why he insisted on stopping him in this way; for it happened that just a day or so before Jack had been reading that good old precept of warning, to “Beware of the Greeks bearing gifts.”

“And I suppose, also, you mean to get away soon?” Clarence went on.

“Monday sees us off, unless something we don’t look for detains us,” was Jack’s response, as he watched the play of emotions on the face of the other, and noted how the pretense of friendliness was fading away.

“Well,” Clarence suddenly burst out with, “I just wanted to let you know what me and Joe Brinker think of your sly trick in finding out where we meant to go this summer, and then arranging to copy after us! It was just what I’d expect such low-down sneaks as Herb Dickson and George Rollins to do; but I am surprised to know how you fell in with such a dirty game, that’s what!”

Really, Jack never had a greater shock in all his life than when Clarence said this. It seemed to almost take his very breath away.

“Now, do you know, Clarence,” he said, steadily, watching that sarcastic face, “the shoe seems to be on the other foot with us. To tell the truth, we’ve been believing all this time that you’d copied after us. In fact, poor Buster has been suspected of giving our secrets away, not intentionally, of course, just because he was seen talking with you. Queer, ain’t it, how great minds often run in the same channel; and both of us thought of going to the St. Lawrence this summer.”

“Aw! now you’re just trying to crawl out of a hole,” the other sneered. “But you needn’t think you can spoil our summer fun for us, if you are six to two. I told my dad about it, and he advised me to go on, regardless. Just make up your minds to keep clear of Joe and me, if you know what’s good for you!”

Even while the other was saying this there suddenly flashed upon Jack’s mind the true reason for his being held up in this way by “Tricky Clarence,” as young Macklin had come to be known among the boys of the town.

He wanted to rub it into Jack, and exult in the consternation which he expected his declaration would cause in the other’s mind. But there was undoubtedly something more than this. If trouble did follow the meeting of the rivals among the many channels of the Thousand Islands, Clarence wished to make it appear that he and Joe were the aggrieved parties, and that they had been actually set upon by the members of the motor boat club, who had a grudge against them of long standing.