I'll come back to you safe and sound, never fear. And this afternoon it's 'All Aboard for Boston!'"

Smiling and confident, he cranked the motor. It caught, and now a chattering tumult filled the air, rising, falling, as Stern manipulated throttle and spark to test them once again.

Into the driver's seat he climbed, strapped himself in and turned to smile at Beatrice.

Then with a practiced hand he threw the lever operating the friction-clutch on the propeller-shaft. And now the great blades began to twirl, faster, faster, till they twinkled and buzzed in the sunlight with a hum like that of a gigantic electric fan.

The machine, yielding to the urge, tugged forward, straining at its bonds like a whippet eager for a race. Beatrice, her face flushed with excitement, stood ready with the knife.

Louder, faster whirled the blades, making a shiny blur; a breeze sprang out behind them; it became a wind, blowing the girl's hair back from her beautiful face.

Stern settled himself more firmly into the seat and gripped the wheel.

The engine was roaring like a battery of Northrup looms. Stern felt the pull, the power, the life of the machine. And his heart leaped within him at his victory over the dead past, his triumph still to be!

"All right!" he cried. "Let go--_let go!_"

The knife fell. The parted rope jerked back, writhing, like a wounded serpent.

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 alt.i.tude 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 pa.s.sed.

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 G.o.d, 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.

Higher he mounted, higher still, his hair whipping out behind in the wild wind, till he could see the sparkle of Narragansett Bay, there in the distance where the river broadened into it. At him the wind tore, louder even than the spitting crackle of the motor. He only laughed, and soared again.

But now he thought of Beatrice; and, as he banked and came about, he peered far down for sight of her.

Yes, there she stood, a tiny dot upon the distant sand. And though he knew she could not hear, in sheer animal spirits and overwhelming joy he shouted once again, a wild, mad triumphant hurrah that lost itself in empty s.p.a.ce.

The test he gave the Pauillac convinced him she would carry all the load they would need put upon her, and more. He climbed, swooped, spiraled, volplaned, and rose again, executing a series of evolutions that would have won him fame at any aero meet. And when, after half an hour's exhaustive trial, he swooped down toward the beach again, he found the plane alighted as easily as she had risen.

Like a sea-bird sinking with flat, outstretched wings, coming to rest with perfect ease and beauty on the surface of the deep, the Pauillac slid down the long hill of air. Stern cut off power. The machine took the sand with no more than vigorous bound, and, running forward perhaps fifty yards, came to a stand.

Stern had no sooner leaped from the seat than Beatrice was with him.

"Oh, glorious!" she cried, her face alight with joy and fine enthusiasm. All her spontaneity, her love and admiration were aroused.

And she kissed him with so frank and glad a love that Stern felt his heart jump wildly. He thought she never yet had been so beautiful.

But all he said was:

"Couldn't run finer, little girl! Barring a little stiffness here and there, she's perfect. So, then, when do we start, eh? To-morrow morning, early?"

"Why not this afternoon? I'm sure we can get ready by then."

"Afternoon it is, if you say so! But we've got to work, to do it!"

By noon they had gathered together all the freight they meant to carry, and--though the sun had dimmed behind dull clouds of a peculiar slaty gray, that drifted in from eastward--had prepared for the flight to Boston. After a plentiful dinner of venison, berries and breadfruit, they loaded the machine.

Stern calculated that, with Beatrice as a pa.s.senger, he could carry seventy-five or eighty pounds of freight. The two rifles, ammunition, knives, ax, tools and provisions they packed into the skin sack Beatrice had prepared, weighed no more than sixty. Thus Stern reckoned there would be a fair "coefficient of safety" and more than enough power to carry them with safety and speed.

It was at 1:15 that the girl took her place in the pa.s.senger's seat and let Stern strap her in.

"Your first flight, little girl?" he asked smiling, yet a trifle grave. The barking motor almost drowned his voice.

She nodded but did not speak. He noted the pulse in her throat, a little quick, yet firm.

"You're positive you're not going to be afraid?"

"How could I, with you?"

He made all secure, climbed up beside her, and strapped himself in his seat.

Then he threw in the clutch and released the brake.

"Hold fast!" cried he. "All aboard for Boston! Hold fast!"

CHAPTER XVIII

THE HURRICANE

Soaring strongly even under the additional weight, humming with the rush of air, the plane made the last turn of her spiral and straightened out at the height of twelve hundred feet for her long northward run across the unbroken wilderness.

Stern preferred to fly a bit high, believing the air-currents more dependable there. Even as he rose above the forest-level, his experienced eye saw possible trouble in the wind-clouds banked to eastward and in the fall of the barometer. But with the thought, "At this rate we'll make Boston in three-quarters of an hour at the outside, and the storm can't strike so soon," he pushed the motor to still greater speed and settled to the urgent business of steering a straight course for Ma.s.sachusetts Bay.

Only once did he dare turn aside his eyes even so much as to glance at Beatrice. She, magnificently unafraid on the quivering back of this huge airdragon, showed the splendid excitement of the moment by the sparkle of her glance, the rush of eloquent blood to her cheeks.

Stern's achievement, typical of the invincible conquest of the human soul over matter, time and s.p.a.ce, thrilled her with unspeakable pride.

And as she breathed for the first time the pure, thin air of those upper regions, her strong heart leaped within her breast, and she knew that this man was worthy of her most profound, indissoluble love.