There was a mean sneer on his sinister face as he snarled out:
"Let me see that message and let me see it quick."
"I've got no message for you," responded Donald, determined not to let the man know that he had information of the green motor boat's whereabouts.
"That's a lie," snarled Barton; "don't monkey with me. I've got this gun and, jingo, I know how to use it, too."
CHAPTER XXIII.
THE DEPTHS OF OLD OCEAN.
Just as Donald, who was no match physically for the burly machinist, was pondering what to do, the door which was open became filled by a rotund figure.
It was Tubby.