The knowledge that Professor Lemm, Slugger Brown and Nappy Martell were approaching the cabins on the upper end of Snowshoe Island filled the Rover boys with wonder.
"Professor Lemm must have come to see Uncle Barney about those deeds," remarked Randy.
"I wonder if that is Slugger's father with him?" broke in Fred.
"Maybe," answered Jack. "Those men were the only two who were interested in getting possession of this island."
"I'll tell you what I think we ought to do!" exclaimed Andy.
"What?" came from the others quickly.
"I think we ought to go back to our own cabin and arm ourselves."
"That might not be such a bad idea, Andy," returned Jack. "Those men, backed up by Slugger and Nappy, may want to carry things with a high hand."
Acting on Andy's suggestion, the four boys retreated to the cabin which they had just left, and each took possession of his weapon.
"I don't think they'll try much rough-house work when they see how we are armed," remarked Randy grimly.