But Mr. Peregrine always says that, had it not been for the Boy Inventors, his machine would have remained and rusted in its shed. So with his authority we have linked their names with his invention.
One other thing of interest must be told. The Vanishing Motor Guns are being manufactured by the United States Artillery Devices Company, whose nominal head is now young Ralph Melville. The business was found to be in a bad way, but the contract for building the guns, which came to it after all, assisted in putting it on its feet again. Dr. Tallman, as Ralph’s guardian, had charge of the work of reconstruction. Prosperity has not changed Ralph, and he is as warm a friend of the boys as ever, and never has forgotten his rescue in mid-air. Dick Dangler has a post in the Melville works, and fills it right well.
And so the time has come when, for the present, we must bid good-bye to the Boy Inventors. But we shall meet them again ere long, and learn something more about their mechanical skill and clever daring. The next volume of their adventures will deal with a particularly enthralling subject—that of submarine work. Of the dangers and difficulties our young heroes faced under the water you may read in The Boy Inventors’ Diving Torpedo Boat.