A spirited argument followed. Gabriel insisted on being left for the second trip. A compromise was made by having him get the two women out of danger, at once, leaving Craig and Grantham on the mountain.
"I'll send Hazen or Keyes back with the 'plane, for you," said he, as he climbed into the driving seat, after the passengers had been stowed. "That will be tomorrow night. Of course, we daren't fly by day. And mind," he added, adjusting his spark and throttle, "mind you meet me with this very same machine, safe and sound, at the Lake Erie refuge!"
"Why this same machine?" inquired Craig.
"Why? Because I intend to use this, and no other, in the final attack. Could poetic justice be finer than that the Air Trust works be destroyed with the help of one of their own 'planes?"
No more was said, save brief good-byes. Those were times when demonstrativeness, whether in life or death, was at a discount. A hand-clasp and a few last instructions as to the time and place of meeting, sufficed. Then Gabriel pressed the button of the self-starter and opened the throttle.
With a sudden gusty chatter, the engine caught. A great wind sprang up, from the roaring, whirling blades. The Floriot rolled easily forward, speeded up, and gathered headway.
Gabriel suddenly rotated the rising-plane. The great gull soared, careened and took the air with majestic power. The watchers on the mountain-side saw its hooded lights, that glowed upon its compass and barometric-gauge, slowly spiralling upward, ever upward, as Gabriel climbed with his two passengers.
Then the lights sped forward, northward, in a long tangent, and, as they swiftly diminished to mere specks, the echo of a farewell hail drifted downward from the black and star-dusted emptiness above.
Craig turned to Grantham, when the last gleam of light had faded in a swift trajectory.
"God grant they reach the last remaining refuge safely!" said he, with deep emotion. "And may their flight be quick and sure! For the fate of the world, its hope and its salvation from infinite enslavement, are whirling through the trackless wastes of air, to-night!"