Captain Baker nodded.

"How do you know they cast the 'Red Rover' adrift?" he asked.

"The rope had been cut," replied Harriet Burrell. "It was just as Miss Elting has told you. The anchor rope had been cut cleanly with a sharp knife. This time the loop, instead of the rope, has been cut."

"I thought you said you had no enemies," observed Sam Crocker.

"Nor have we, as far as we know," answered the guardian.

"I don't know what you would call the person who did this, then. This is all the more reason why you should anchor near our camp."

"Oh, no. We are perfectly able to take care of ourselves," smiled Miss Elting. "Experiences such as these aid in making us self-reliant."

"Have you a revolver on board?" questioned Gordon.

"Miss Elting has a revolver," answered Jane.

"We hope never to be forced to use it, however. The trouble is that our friend doesn't show himself. But just wait. One of these fine nights we'll catch him, then he'll take a bath in the lake."