“Not at all,” replied Conolly, turning to one of the models, and beginning his showman’s lecture with disquieting promptitude. “Hitherto, as you are no doubt aware, Mr. Douglas, steam has kept electricity, as a motive power, out of the field; because it is much less expensive. Even induced magnetic currents, the cheapest known form of electric energy, can be obtained only by the use of steam power. You generate steam by the combustion of coal: electricity, without steam, can only be generated by the combustion of metals. Coal is much cheaper than metal: consider the vast amount of coal consumed in smelting metals. Still, electricity is a much greater force than steam: it’s stronger, so to speak. Sixpennorth of electricity would do more work than sixpennorth of steam if only you could catch it and hold it without waste. Up to the present the waste has been so enormous in electric engines as compared with steam engines that steam has held its own in spite of its inferior strength. What I have invented is, to put it shortly, an electric engine in which there is hardly any waste; and we can now pump water, turn mill-stones, draw railway trains, and lift elevators, at a saving, in fuel and labor, of nearly seventy per cent, of the cost of steam. And,” added Conolly, glancing at Douglas, “as a motor of six-horsepower can be made to weigh less than thirty pounds, including fuel, flying is now perfectly feasible.” “What!” said Douglas, incredulously. “Does not all trustworthy evidence prove that flying is a dream?” “So it did; because a combination of great power with little weight, such as an eagle, for instance, possesses, could not formerly be realized in a machine. The lightest known four-horse-power steam engine weighs nearly fifty pounds. With my motor, a machine weighing thirty pounds will give rather more than six-horse-power, or, in other words, will produce a wing power competent to overcome much more than its own gravity. If the Aeronautical Society does not, within the next few years, make a machine capable of carrying passengers through the air to New York in less than two days, I will make one myself.” “Very wonderful, indeed,” said Douglas, politely, looking askance at him. “No more wonderful than the flight of a sparrow, I assure you. We shall presently be conveyed to the top of this building by my motor. Here you have a model locomotive, a model steam hammer, and a sewing machine: all of which, as you see, I can set to work. However, this is mere show. You must always bear in mind that the novelty is not in the working of these machines, but the smallness of the cost of working.”