out the periphery of the stockade, once more dominated the
night.

For precisely ten minutes, nothing broke that silence--minutes
during all of which the Master remained calmly waiting, with grave
confidence. Bohannan shuddered a little. His Celtic imagination was at
work, again. Uncanny the attack seemed to him, unreal and ghostlike.
So, perhaps, might strange, unbelievable creatures from some other
planet attack and conquer the world, noiselessly, gently, irrevocably.

This assault was different from any other ever made since man and man
first began battling together in the dim twilights of the primeval.
Not with shout and cheer did it rush forward, nor yet with venomous
gases that gave the alarm, that choked, that strangled, that tortured.

Silence and concealment, and the invisible blight of sleep, like the
greater numbing that once fell on the hosts of Sennacherib, enfolded
all opposition. All who would have stood against the Legion, simply
sighed once, perhaps spoke a few disjointed words, then sank into
oblivion.

So far as anyone could see, save for the bursting of twenty-nine
insignificant little light-bubbles, in mid-air, nothing at all had
happened. And yet tremendously much had happened, inside the huge
stockade.

Ten minutes to a dot had drifted by, seeming at least six times as
long, when all at once the Master stood up.

"The gas has dissipated enough now," said he, "so that we can advance
in safety. Come!"

The three also arose, half at his command, half from the independent
impulses given them by their watches as these came to the designated
second for the forward movement. The Master blew no whistle, gave no
signal to the many others scattered all through those darkly silent
woods; but right and left, and over beyond the stockade, he knew with
the precision of a mathematical equation every man was at that exact
moment also arising, also obeying orders, also preparing to close
in on the precious thing whereof they meant to make themselves the
owners.

Forward the Master made his way, with the three others of his
immediate escort. Though there no longer existed any need of silence,
hardly a word was spoken. Something vast, imminent, overpowering,
seemed to have laid its finger on the lips of all, to have muted them
of speech.

The vacuum-lights, however, were now freely flashing in the little
party, as it advanced directly toward the stockade. The men clambered
over rocks, through bushes, ac