Gently at first, then with greater and greater speed, shaking and bouncing a little on the broad, flat wheels that Stern had fitted to the alighting gear, the plane rolled off along the firm-beaten sands.

Stern advanced the spark and now the screw sang a louder, higher threnody. With ever-accelerating velocity the machine tooled forward down the long stretch, while Beatrice stood gazing after it in rapt attention.

Then all at once, when it had sped some three hundred feet, Stern rotated the rising plane; and suddenly the machine lifted. In a long smooth curve, she slid away up the air as though it had been a solid hill--up, up, up--swifter and swifter now, till a suddenly accelerated rush cleared the altitude of the tallest pines in the forest edging the beach, and Stern knew his dream was true!

With a great shout of joy, he leaped the plane aloft! Its rise had all the exhilarating suddenness of a seagull flinging up from the foam-streaked surface of the breakers. And in that moment Stern felt the bliss of conquest.

Behind him, the spruce propellers were making a misty haze of humming energy. In front, the engine spat and clattered. The vast spread of the leather wings, sewn, stretched and tested, crackled and boomed as the wind got under them and heaved them skyward.

Stern shouted again. The machine, he felt, was a thing of life, friendly and true. Not since that time in the tower, months ago, when he had repaired the big steamengine and actually made it run, had he enjoyed so real a sense of mastery over the world as now; had he sensed so definite a connection with the mechanical powers of the world that was, the world that still should be.

No longer now was he fighting the forces of nature, all barehanded and alone. Now back of him lay the energy of a machine, a metal heart, throbbing and inexhaustible and full of life! Now he had tapped the vein of Power! And in his ears the ripping volley of the exhaust sounded as sweetly as might the voice of a long-absent and beloved girl returning to her sweetheart.

For a moment he felt a choking in his throat, a mist before his eyes. This triumph stirred him emotionally, practical and cool and keen though he was. His hand trembled a second; his heart leaped, throbbing like the motor itself.

But almost immediately he was himself once more. The weakness passed. And with a sweep of his clear eyes, he saw the speeding landscape, woods, hills, streams, that now were running there beneath him like a fluid map.

“My God, it's grand, though!” he exclaimed, swerving the plane in a long, ascending spiral. All the art, the knack of flight came back to him, at the touch of the wheel, as readily as swimming to an expert in the water. Fear? The thought no more occurred to him than to you, reading these words.