"What do you mean by that?"
"Did you see a submarine?"
Both questions were asked in a breath.
"No," replied Ned, "I did not see a submarine, but I don't believe any cloud passing over the sky would drop anything like this."
He passed the knife to Jack and took the glass. Jack opened his eyes wide as he examined the weapon and noted the initial on the handle. He turned impulsively to Ned.
"Where did you get it?" he asked.
"At the bottom."
"Did you find it lying there?"
"It fell just as I reached the water chamber."
"Then how the dickens did the Diver get away so soon?" demanded the boy.