"I tell you what, Barr," declared Ensign Hargreaves, as they neared the familiar island, "you have the most wonderful boat on earth, and Uncle Sam has got to have it. My report goes in to Washington to-morrow and you can guess what it will contain."
"Thank you," said the inventor simply, extending his hand.
CHAPTER XXIX.
INTO THE JAWS OF DEATH.
"That's queer, Rob!"
"What's queer, Merritt, the way you've been sitting and staring for the last ten minutes?"
"No; that odd noise. Don't you hear it?"
The two lads were seated in the cabin of the submarine on "night guard duty," as it was called. Following the anxious days when Berghoff had made affairs on the island so filled with uneasiness for the Scouts and their friends, this sentry duty had been regularly maintained.