“But this is going to be a regular gale.”

“It looks that way, sir.”

“Then, by all that’s certain, that launch can’t weather it,” cried Moddridge, his pallor increasing. “Poor Frank! To be sent to the bottom in that fashion!”

“Why, the launch isn’t a large craft, it’s true, sir,” Captain Tom responded. “But she’s built for a sea-going craft. With decent handling she’ll go through any weather like this.”

“You’re not getting any nearer. You’re not overtaking them,” was Moddridge’s next complaint. The “Rocket” was moving, now, at about eighteen miles an hour.

“I don’t want to overtake that boat,” Captain Halstead replied, with vigor. “I don’t want to get near enough to let them see our lights. We can’t see anything but their masthead light, since they’ve stopped using the searchlight.”

Even had it been daylight, the two boats were now so far apart that from the deck of either, one could not have seen the other’s hull. In the chase that must follow the young motor boat skipper intended to preserve that distance in order to avoid having his pursuit detected. In the thick weather it was not possible to see the launch’s masthead light from the “Rocket’s” deck with the naked eye. An ordinary marine glass might not have shown the light, either, but the one that Captain Tom held in his hand kept the light in sight.

“If Frank is really aboard that launch,” inquired Mr. Moddridge, “where on earth can they be taking him?”

“One guess is as good as another when you don’t know,” smiled Halstead. “It may be that they have picked out some lonely little island in the sea for their purpose. I hope they don’t increase their speed to-night. That other craft could get away from us if our pursuit were suspected.”

All through the night the gale continued. The “Rocket” rolled a good deal, and strained at her propeller, but she was a sea boat and held her own well. When morning dawned the motor craft was getting out toward the edge of the storm. Hours before the course of the quarry ahead had changed to the east, and both boats were now south of regular ocean routes and far east of coast-going vessels.