It grew dark and for a while the sky was barred with heavy clouds until the moon broke out, when they saw the pursuing craft sweeping up close astern in the midst of a blaze of silvery radiance. She had now, however, a mass of canvas swung out on either side of her, and Frank wondered what sail she was carrying.

"They've boomed out a jib as a spinnaker," Harry explained. "I don't see why we shouldn't do the same, particularly as it will make them keener on following us to Bannington's. One of them means to go south with the steamer if dad gets on to her. Now we'll heave in that bucket, and when it's done they'll open their eyes."

It was not easy to haul in the bucket. Indeed, once or twice it was nearly torn away from them, but at length they accomplished the task.

"It's awkward running a boat with a spinnaker unless you have a crew," remarked Harry with a somewhat puzzled look. "Still, I feel we ought to give those fellows a run for their trouble and I can't get clear of them with only the mainsail drawing. A jib set in the ordinary way is no use when you're before the wind."

The other boat had drawn almost level with them and came surging along some forty yards away, rising and falling, with the foam piled up about her bows, and a great spread of canvas that swung up and down as she rolled on either side.

"Hello!" shouted Harry. "Where are you going?"

"North," was the laconic answer.

Harry chuckled as he turned to Frank. "Well, as dad will be in Everett by this time, I don't see why they shouldn't come along with us as far as they like, but we'll let them draw ahead before we get up the spinnaker. I'd rather they didn't notice I had to set it alone."

The other boat forged past them, and she was growing dim ahead when Harry pulled out a bundle of canvas from beneath the side deck.

"It's an extra big jib we carry in light winds, but it makes a good spinnaker," he said. "You'll have to keep her straight before the wind, because it's a mighty awkward thing to set."