"In self-protection," laughed Ruth.
"I guess Mrs. Tellingham would have something to say about it, too," declared Helen.
It was not the subject of school clubs that was the burden of Ruth Fielding's thought for most of that day, however. Nor did the arrival of so many new scholars put the main idea in her mind aside. This troubling thought was of Miss Picolet and the sound of the harp on the campus at midnight. The absence of the French teacher from the dormitory, the connection of the little lady with the obese foreigner who played the harp on the Lanawaxa, and the sounding of harp-strings on the campus in the middle of the night, were all dovetailed together in Ruth Fielding's mind. She wondered what the mystery meant.
She saw Tony Foyle cleaning the campus lanterns during the day, and she stopped and spoke to him.
"I heard you tell Jennie Stone last night that you had to drive street musicians away from the school grounds, sir?" said Ruth, quietly. "Was there a man with a harp among them?"
"Sure an' there was," declared Tony, nodding. "And he was a sassy dago, at that! 'Tis well I'm a mon who kapes his temper, or 'twould ha' gone har-r-rd wid him."
"A big man, was he, Mr. Foyle?" asked Ruth.
"What had that to do wid it?" demanded
