“What do you make of it?”

“Oh, the Snark is being used as a meeting place—that’s obvious. Just for the fun of it, I sneaked aboard last night.”

“What did you learn, Ben?”

“The men were having a confab in one of the cabins. I couldn’t hear much, but enough to gather that they are afraid Webb will talk to the police.”

“About what, Ben?”

“Didn’t learn that part. I aim to keep tab on the place for a while.”

Penny told of seeing Webb that afternoon and also of his association with Professor Bettenridge.

“A secret ray machine, my eye!” Ben exploded. “You may be sure it’s a fake if Webb has anything to do with it! Penny, this is no business for you to be mixed up in. Webb is a dock rat and as surly an egg as I ever met. You ought to give him a wide berth.”

“I’ll certainly be careful,” Penny promised, arising. “Sorry to leave you with the dishes, Ben, but I must run or I’ll be late for another appointment.”

She really hated to go, for she saw that her companionship had made the young man more cheerful. Ben walked with her through the waterfront district, and then reluctantly said goodbye.