Jack’s interest began to increase by leaps and bounds. He realized that perhaps the intruder might be looking forward to something of far greater advantage than a mere carrying off of eatables. Yes, he was heading now toward the shore where the white motor boat was tied up! And Jack suddenly recollected that one of his companions had suggested that the robbers kept their treasure-trove aboard the craft. That was after the discovery of the hoax connected with the buried box.
But then how could this rough fellow have any suspicion concerning the plunder taken from the bank? He surely could not, and must be intending to go aboard simply under the belief that fatter pickings were to be found on the little vessel just then totally unguarded.
Now he was at the river bank, with nothing to interfere with his plan of boarding the tied-up boat. Of course his progress had been followed by every one of the six pair of eyes belonging to the boys hiding in the bushes, and it would be needless to say that by now all of them guessed what his destination was.
Jack felt a pair of knuckles industriously digging at his side which he knew must belong to George. The impulsive one was in this mute fashion voicing his desire to know what Jack meant to do about it; and doubtless hoping that they would be given permission to make some sort of move after the thief had fully vanished over the side of the white boat.
But Jack paid no attention to the nudges. He was thinking just then what a queer old mix-up the whole affair was getting to be; when one robber attempted to ply his trade upon another of the same sort.
Now they could see the shadowy form passing from the bank on to the gunwale of the boat. The fact that the side of the craft chanced to be so very white did much to throw the climbing figure out in relief. Then he disappeared and everything was as it had been; only they knew an intruder had boarded the boat, and must be rummaging around in search of something which doubtless he expected to find there.
Still the two near the dying camp fire had shown no sign of life. They seemed to be sound asleep, and utterly unconscious of the fact that an enemy had crept into their midst, bent on pillage.