"Well, it's short and sweet and very satisfying!" Frank laughed.
"Aw, read it!" demanded Tommy. "What's the use of making a monkey of yourself? Let's see what it has to say for itself."
Frank bent a searchlight on the paper and read:
"Will Smith, in camp near Katalla, Alaska: The machine plans have been traced to the cabin to which you were directed. Make close examination there before looking elsewhere. Horton."
"What do you know about that, Cameron?" asked Will with a smile. "Are the plans really hidden in our cabin?"
"Your cabin!" sneered Cameron.
"I guess the cabin belongs to us as much as it does to you!" Tommy cut in. "Are the machine plans hidden there?"
"What do you want of the machine plans?" demanded Cameron.
"They don't belong to you!" roared Fenton.
"We have no claim upon them," replied Will. "In fact, we have no use for them at all, except that we want to identify the mark of a human thumb which soiled one of the papers."