At the question her father laughed.
"See here!" he protested good-humoredly, "what do you think I am? Just because I happen to be a superintendent do you think me a volume of railroad history, young woman? The topic, I confess, is a fascinating one; but I am off for a vacation to-day."
"Oh, tell us, Dad, do!" urged the girl.
"Nonsense! What is the use of spoiling a fine morning like this talking business?" objected her father.
"But it is not business to us," interrupted Mrs. Tolman. "It is simple a story—a sort of fairy tale."
"It is not unlike a fairy tale, that's a fact," reflected her husband gravely. "Imagine yourself back, then, in 1700, before steam power was in use in England. Now you must not suppose that steam had never been heard of, for an ancient Alexandrian record dated 120 B. C. describes a steam turbine, steam fountain, and steam boiler; nevertheless, Hero, the historian who tells us of them, leaves us in doubt as to whether these wonders were actually worked out, or if they were, whether they were anything but miniature models. Still the fact that they are mentioned goes to prove that there were persons in the world who at a very early date vaguely realized the possibilities of steam as a force, whether turned to practical uses or not. For years the subject remained an alluring one which led many a scientist into experiments without number. In various parts of the world men played with the idea and wrote about it; but no one actually produced any practical steam contrivance until 1650, when the second Marquis of Worcester constructed a steam fountain that could force the water from the moat around his castle as high as the top of one of the towers. The feat was looked upon as a marvel and afterward a larger fountain, similar in principle, was constructed at Vauxhall and from that time on the future of steam as a motive power was assured."
"Did the Marquis of Worcester go on with his experiments and make other things?" demanded Stephen.
"Apparently not," replied his father. "He did, nevertheless, furnish a basis for others to work on. Scientists were encouraged to investigate with redoubled zeal this strange vapor which, when controlled and directed, could carry water to the top of a castle tower. When in 1698 Savery turned Worcester's crude steam fountain to draining mines and carrying a water supply, every vestige of doubt that this mighty power could be applied to practical uses vanished."
"Did the steam engine come soon afterward?" queried Doris, who had become interested in the story.
"No, not immediately," answered Mr. Tolman, pausing to shift the gear of the car. "Before the steam engine, as we know it, saw the light, there had to be more experimenting and improving of the steam fountain. It was not until 1705 that Thomas Newcomen and his partner, John Calley, invented and patented the first real steam engine. Of course it was not in the least like the engines we use now. Still, it was a steam device with moving parts which would pump water, a tremendous advance over the mechanisms of the past where all the power had been secured by the alternate filling and emptying of a vacuum, or vacant receptacle, attached to the pump. Now, with Newcomen's engine a complete revolution took place. The engine with moving parts, the ancestor of our modern exquisitely constructed machinery, speedily crowded out the primitive steam fountain idea. The new device was very imperfect, there can be no question about that; but just as the steam fountain furnished the inspiration for the engine with moving parts, so this forward step became the working hypothesis for the engines that followed."