A few moments more, and he was himself surprised, as the solitary sentinel was joined by another, and another, and another, till presently there were six of the great birds flapping and whirling between him and Bald Face, about at the level of the edge of the plateau.
"Seem to be as interested in aeroplanes as any of us humans," thought MacCreedy, and gave his planes a lift that should carry him over the plateau at a height of not much over a hundred feet. He would make a hasty observation first, then circle around and effect a landing, if the surface looked smooth enough for him to attempt it without too much risk. He was surprised somewhat by the attitude of the eagles, who were now circling nearer, and seemed to be more angry than curious or terrified at his approach. Then his attention was abruptly withdrawn from their threatening evolutions. It was all required, and that urgently, by the aeroplane.
Having arrived over the deeply cleft and ridged outworks of Bald Face, the aeroplane had plunged into a viewless turmoil of air-currents and vortices. It dropped with startling suddenness into a "pocket," and fell as if a vacuum had opened beneath it. MacCreedy saw a vicious granite ridge, whiskered with fir trees, lurch up at him insanely from a thousand feet below. He was almost upon it before his planes bit upon solid air again and glided off from the peril, slanting upward rockingly over a gaping abyss. Yelping with triumph, the eagles had swooped down after him; but he could not hear their cries, of course, through the roar of the Gnome; and of eagles, at that moment, he was thinking not at all.
Realizing the imminence of his danger from these vortices, MacCreedy changed his course and swept back again as fast as he could toward the open, his machine careering wickedly in the eddies and upthrusts of air. He decided that he must get far above this area of disturbance, and then spiral down directly over the plateau, where, as he calculated, the currents would be less tumultuous.
The eagles, imagining that the loud monster had been put to flight by their threats, came following in its wake, determined to see it safely off their premises and give it no time to recover from what they conceived to be its panic. But they were far too sagacious to attack and force a more than doubtful conflict. They were filled with awe of this gigantic being which flew with rigid wings and such appalling roar, yet allowed itself to be ridden by the man between its shoulders. They were perplexed, too, by the fierce wind which streamed out behind its level wings. Their amazement was heightened by the fact that their own long and powerful wings, which were able to overtake so easily the flight of the agile fish-hawk, were forced to beat furiously in order to keep up with this incomprehensible stranger, who was apparently making no effort at all.
A swift motor-car, which had followed MacCreedy's flight at top speed across the plain, had halted at the point where the highway passed nearest to the broken and impassable region surrounding the mountain. Its occupants, watching MacCreedy's movements through their field-glasses, and noting the great birds crowding behind him, thought at first that the eagles had put him to flight and forced him to give up his venture. They were undeceived, however. Then they saw him turn—at such a height that, even to their powerful glasses, the pursuing eagles were no more than specks—and soar back till he was directly over the summit.
At the height which he had now gained the air was icy cold, but still as a dream. The world below looked like a vast, shallow bowl, the sides concaving upwards around him to the horizon. Two-thirds of this horizon rim were of dark green woods, threaded with the gleaming silver of water-courses. The remaining third was of sea, which looked as if it overhung the town of X——, and were withheld only by a miracle from flowing in and filling the bowl. Directly beneath him, two to three thousand feet down, the mighty summit of Old Bald Face looked insignificant. It lay outspread quite flat and shelterless in the sun, its secrets clean revealed, and there, sure enough, at its center, was the pool of tradition, gleaming upward, glassy still. At the same time he saw, though without much interest, the eagles. They were very far below him now, hardly above the level of the plateau, flying in occasionally over its edges, but for the most part circling out above the surrounding gulfs. In a casual way MacCreedy inferred that they must have nests in the ledges of the precipices.
In a somewhat narrow spiral he now began his descent, gradually and under power, that he might be in full readiness to grapple with the treacherous gusts which came leaping up at him from under the brink of the plateau. He was surprised to see that, as he descended, the eagles rose hurriedly to meet him; but at first he paid no attention to them, being intent upon the search for a good landing-place, and upon the mystery of that sky-inhabiting pool. A minute or two more, however, and it was no longer possible for him to ignore the approaching birds, who were rising at him with unmistakable manifestations of rage. For the first time it occurred to him that they might be thinking he had come to rob their nests. "Plucky beggars!" he said to himself admiringly, "to think of showing fight to a grown-up aeroplane!"
The next moment, as he noted the spread of those flapping wings, the shining, snowy, outstretched heads and necks, the firm and formidable half-opened beaks, a sweat of apprehension broke out all over him. What if one of the misguided birds should foul his propeller or come blundering aboard and snap a stay or a control wire? The idea of being dashed to pieces in that skyey solitude was somehow more daunting to his spirit than the prospect which he faced indifferently every day—that of being hurled down upon familiar earth.