"Excuse me, but I don't propose to reveal our methods of procedure," laughed Harriet. "Oh, you can't outwit us. You will find us ready for you every time. We know all about last night, too."

"I'd certainly like to know where you were last night," said Captain Baker.

"We were near you all the time, and you didn't know us," laughed Harriet. "Even when you came out here yesterday you passed us by without a single look. You did not see us. Then last night, when you were chasing some one whom you thought was spying on your camp, you passed us again, and—"

"So that was you, eh?" jeered Larry.

"Who was I?" answered Harriet innocently.

"The mysterious boat we were pursuing," answered George, eyeing her keenly.

"Harriet ith not a boat," averred Tommy.

"No. She is a mermaid," declared George with emphasis.

"I beg to differ with all of you," said Sam. "The Meadow-Brook Girls are the original will o' the wisps. But you haven't seen the last of the Tramp Club yet. You have won twice but you shan't win again. Hereafter we'll be on the alert."

"You'll have to keep a watch on us night and day then," chuckled Jane.