ubt, fear and horror, so that even thus to
receive them, by mental telepathy, was to feel the searing heat of
their fear.

* * * * *

Now, in the instant when the battle in Space seemed to be over and the
Gens of Dalis were prisoners, the thought waves were no more, and a
brooding silence took their place. Dalis, the Sarkas knew, possessed
the power to mask his thoughts, for it was a power possessed in common
by all the scientists of Earth. But the common people of his Gens did
not posses that power. However, for the moment Sarka had forgotten an
all important something: that, when people were outside the roof of
the world, they were subservient to the will of a common commander to
whom they had sworn allegiance.

If, therefore, Dalis could mask his own thoughts from the brains of
men, he could also mask the thoughts of the people of his Gens, merely
by willing it! So Sarka and his father and Jaska could not know
whether the Gens of Dalis had gone over in a body with him, in a truce
with the people of the Moon, or whether they were dual prisoners--of
Dalis and of the Moon-men!

More than ever was it necessary for someone to somehow reach the Moon
and make a thorough investigation, discover just what Dalis was doing,
what mischief he was hatching.

The secret exit dome seemed to be the answer.

"You can manage without me, father?" asked Sarka.

* * * * *

The elder Sarka nodded.

"Of the other Spokesmen of Earth," went on Sarka, "I trust Gerd the
most. Might I suggest that you bring him here, trust him in all
details, and let him take my place wherever possible? Or, better
still, keep Jaska here with you! I ... I may not be able to return!
I'll try to find a way, but--we can always communicate telepathically.
Jaska...."

"Jaska," said that young lady grimly, "goes with Sarka wherever Sarka
goes!"

"But it may mean death! We can only guess at the cunning of the Moon
dwellers! They may have been in secret communication with Dalis for
centuries! Dalis, who somehow discovered our secret finger code, may
also know of the secret exit dome, and the principle upon which it
operates! If he does, he may know how to combat it! Perhaps that
explains his laughter! Perhaps he heard and understood every word we
spoke, hears and understands every word we speak now! Who knows? He
may wait until I have passed through the secret exit dome, and then
make it imposs