The sound, perhaps, was no greater than you would make in snapping an ordinary lead-pencil in your fingers; yet on the instant three of the Things raised their bulbous and exaggerated heads in an attitude of intense, suspicious listening. Plain to see that their senses, at least, excelled those of the human being, even as a dog's might.
The individual which, alone of them all, had been standing, wheeled suddenly round and made a step or two toward the building. Both watchers saw him with terrible distinctness, there among the sumacs and birches, with the beauty of which he made a shocking contrast.
Plain now was the simian aspect, plain the sidelong and uncertain gait, bent back and crooked legs, the long, pendulous arms and dully ferocious face.
And as the Thing listened, its hair bristling, it thrust its villainous, apelike head well forward. Open fell the mouth, revealing the dog-teeth and the blue, shriveled-looking gums.
A wrinkle creased the low, dull brow. Watching with horrified fascination, Stern and Beatrice beheld--and heard--the creature sniff the air, as though taking up some scent of danger or of the hunt.
Then up came the right arm; they saw the claw-hand with a spear, poise itself a moment. From the open mouth burst with astounding force and suddenness a snarling yowl, inarticulate, shrill, horrible beyond all thinking.
An instant agitation took place all through the forest. The watchers could see only a small, fan-like space of it--and even this, only a few rods from the building--yet by the confused, vague noise that began, they knew the alarm had been given to the whole Horde.
Here, there, the cry was repeated. A shifting, moving sound began. In the visible group, the Things were getting to their handlike feet, standing unsteadily on their loose-skinned, scaly legs, gawping about them, whining and clicking with disgusting sounds.
Sudden, numbing fear seized Beatrice. Now for the first time she realized the imminent peril; now she regretted her insistence on seeing the Horde at close range.
She turned, pale and shaken; and her trembling hand sought the engineer's.
He still, for a moment, kept his eye to the crack, fascinated by the very horror of the sight. Then all at once another figure shambled into view.
"A female one!" he realized, shuddering. Too monstrously hideous, this sight, to be endured. With a gasp, the man turned back.
About Beatrice he drew his arm. Together, almost as soundlessly as wraiths, they stole away, out through the office, out to the hallway, into the dim light of the arcade once more.
Here, for a few moments, they knew that they were safe. Retreat through the Marble Court and up the stairs was fairly clear. There was but one entrance open into the arcade, the one through Pine Tree Gate; and this was blocked so narrowly by the giant bole that Stern knew there could be no general mob-rush through it--no attack which he could not for a while hold back, so long as his ammunition and the girl's should last.