“Let him go,” ordered, the yard’s owner.  “He won’t be seen around Dunhaven after this.  If he is, I can quickly enough put the law’s officers on his track.  But he’ll vanish and stay vanished.”

“I shan’t soon forget the absolutely dumfounded look on his face when he saw that photograph,” laughed Mr. Pollard.  “It was a look of complete, incredulous amazement.”

“I’m sorry for the wretch’s family,” sighed Mr. Farnum.  “However, if Owen clears out promptly, and stays away from this part of the country, I’ll give him an opportunity for a new chance.”

Then the work went on again.  Even with the thorough examination of the sea-valve that had been, tampered with, there was not so much to be done, for this was the last day of the work.  On the morrow Dunhaven was to be more or less alive, for the “Pollard” was to be launched then.  Many visitors, including a swarm of newspaper men, were expected.  An officer of the United States Navy was also booked to be present, to witness the launching, and to note how the “Pollard” might sit on the water afterwards.

Before four o’clock the last stroke of work had been done.  Mr. Farnum, the anxious, inventor, the foreman and the others went all over the submarine marine craft, inside and out, locking for any detail of the work that might have been slighted.

“It’s all done—­finished,” cried David Pollard, nervously.

“And, Mr. Andrews, you’ll have a real guard here to-night to help you keep watch,” announced Jacob Farnum.  “We’ve heard the last of Owen, without a doubt, but we won’t take a single chance to-night.  Now, men, all be here at seven in the morning, ready for work.  The launching is to be at ten o’clock, but at the last moment we may find that something needs overhauling.  Now, you’ve all worked hard and faithfully.”  “Here’s a little present for each of you, with much more to come if the boat proves the success we hope.”

As the men passed him, Jacob Farnum handed each a crisp ten-dollar banknote.  Even Jack and Hal were thus remembered.

“But we haven’t been here, sir, long enough to earn this present,” protested Jack Benson.

“You haven’t been here long, perhaps,” smiled Mr. Farnum.  “But think of what you did last night.  By the way, Benson, and Hastings, I want to see you at my office at once.”

Wondering somewhat, the youngsters followed their employer, and David Pollard accompanied them.

“Now, then, boys,” began their employer, seating himself at his desk, “I want to say to you that my friend Pollard hired you on the strength of your general appearance and the impression you both made.  At the same time Pollard was careful to write to the references you gave in your home town.  This noon he received letters from your former school teacher and your minister.  Both speak in the nicest terms of you both, as honorable, upright, hard-working young men.”