Frank laughed at all these wild theories. He did not know himself what the solution of the mystery could be, but felt positive that it was along different lines from anything as yet suggested in the fertile brains of his companions. Besides, he wondered what that occasional smile he saw upon the face of Will meant. Evidently the other was keeping back something from his chums; and it must have a connection with the houseboat.
As they expected to start home on the following day, it would not be long before they would arrive in St. Paul, ready to purchase their provisions for the beginning of the river trip, and start down stream.
It was the last night at college for that term and all sorts of affairs were going on among the students, who would separate for two months and more on the morrow. When morning came there was a grand exodus, and the station of the college town presented a gay appearance, as scores of young fellows, with suitcases in their hands, boarded the train that pulled out.
Those who were going later gave the college yell when the whistle of the engine announced that the parting minute had arrived. And amid a shrieking of hundreds of voices the train started that was to bear the four chums to their homes in Centerville.
“There’s your dear friend, Oswald Fredericks, Frank!” said Will, as the party hung partly out of a couple of windows in the car they occupied.
“And he’s got his eye glued on you, too; don’t forget,” remarked Jerry.
“Oh! he’s a good hater, all right,” said Bluff. “If he didn’t have any reason to wish you all sorts of bad luck before, that souse in the river settled it. From now on he’ll never hear the name of Frank Langdon without getting mad, you mark me. And some day, sooner or later, he hopes to have a chance to even up the score.”
“Huh! it may come sooner, then,” remarked Jerry, significantly.
“See here,” remarked Frank, turning to look at the last speaker, “did you keep your word, and tell Duke Fletcher about our plans this summer?”
“Course I did,” he admitted. “You heard me tell I was going to do it, and nobody said a word. I like to have things going on all the time! What’s the use of living, if you can’t have some excitement once in a while? Besides, I’m hoping Oswald will find a chance to ‘hop’ Frank here. You see, I know what will follow; and he needs a lesson, that upstart does, to take the conceit out of him.”