"Did you note that no men, formed like our own, no creatures of any sort whatever, fell from the cars?"


gain the awesome silence, and the keen brains of the Sarkas wrestled with this vague hint of the uncanny.

"You mean, Jaska ... you mean...."

"That the occupants of aircars are part of the cars, but—Beings of the Moon! That they are either metal monsters endowed with brains or tiny creatures irrevocably attached to the cars themselves!"

"But how," said Sarka at last, "are we to be sure? I can understand what Dalis might do if the Moon-men granted his wish for an alliance with them. It is easy to understand why his Gens would follow his lead, for with the Moon forced outward from the Earth faster than his Gens could retreat, there is but one direction for his Gens to go—toward the Moon! They would go to the Moon as captives and trust the keen brain of Dalis to gain the mastery, sooner or later, over the Moon-men. And then...."

"And then—?" repeated Sarka the Elder.

"Then, Dalis has already been inspired by the speed with which those aircars travel! You will remember that he did not take kindly to leaving the Earth and making his abode on some other planet! But why could he not do so, combine forces and knowledge with the people of that planet—and then return to Earth in alliance with them?—after we have depleted our forces by placing a large portion of our people on Mars and Venus and Saturn?"

"Sarka, my son," said Sarka's father, "before we continue with our flight to Mars, we must know the truth! We must somehow learn exactly what is going on on the Moon! If you could reach the Moon, alone, undetected, and bring back a report...."