What a joy it was to these two bosom friends to send the ship bounding forward! To stir up the motor gently purring beside them, to rouse it as it were to a gentle fury, for that was one of the points of Joe's handiwork and genius. This paraffin-fired motor of his ran as smoothly as any turbine. You might accelerate it as much as you could, and still it purred, though at its highest speeds the purr had become angry and assertive. Yes, it was a joy to shut close, to bang and bar as it were, the throttle and set the hydraulic pumps into full action. And how the ship responded. She leaped forward, and there had been times when the speedometer mounted in the engine-room told that the vessel was thrusting herself through the air at the incredible speed of two hundred miles an hour. Impossible! we hear some sceptical reader exclaim. Why? But five years ago aeroplanes were spoken of derisively, while their speed seldom exceeded forty miles an hour. To-day they can shoot through the air at a hundred, and the day is fast approaching, thanks to Joe Gresson and others of his kidney, when that speed will be as nothing. Why, then, should this great airship not be able to attain to even double the greatest known speed of an aeroplane? Why, indeed? Her design was all in her favour. There was hardly a projection about her to cause wind friction and delay her passage, while the smooth celludine with which she was coated slid through the atmosphere with an ease that had never been approached before. Add to these points, which all make for speed, engines of the highest efficiency, a transmission of the latest design and purely hydraulic. As carried out on the airship this means of conveying power from the engines to the propeller guaranteed but the merest fractional loss. In fact, what loss there was was negligible. And the propeller itself was one for which aviators would willingly have given a small fortune. But enough of such explanations. We live in a world of marvellous and incredible invention. The armchair sceptic and unbeliever of to-day has his views and scepticism shattered almost before he was finished speaking. The marvels of the Zeppelin, acknowledged to be the last word in airship construction, were now overshadowed and belittled by the wonders of Joe Gresson's invention. The world was raving about the ship. Scientists and inventors in every country were longing to be made familiar with its intricacies.