"Just what I was about to suggest," remarked Professor Bumper. "Bombs, such as this, do not sprout of themselves on bare decks. And I take it this one is explosive."
"Let me look at it," suggested Tom. "I know something of explosives."
It needed but a casual examination on the part of one who had done considerable experimenting with explosives to disclose the fact that it had every characteristic of a dangerous bomb. Only the pulling out of the fuse had rendered it harmless.
"If it had gone off," said Tom, "we would both have been killed, or, at least, badly injured, Mr. Titus."
"I believe you, Tom. And we owe our lives to Professor Bumper."
"I'm glad I could be of service, gentlemen," the scientist remarked, in an easy tone. "Explosives are out of my line, but I guessed it was rather dangerous to let this go off. Have you any idea how it got here?"
"Not in the least," said Tom. "But some one must have placed it here, or dropped it behind us."
"Would any one have an object in doing such a thing?" the professor asked.
Tom and Mr. Titus looked at one another.
"Waddington!" murmured the contractor. "If he were on board I should say he might have done it to get us out of the way, though I would not go so far as to say he meant to kill us. It may be this bomb has only a light charge in it, and he only meant to cripple us."