"When you have exhausted yourself thoroughly," he said, "I shall demonstrate my own powers—but slowly, so that death will not be too quick for you."

The use of such waves of force was exhausting to Underwood, but he knew that Demarzule's absorptive organ should soon reach maximum capacity, if it were not allowed to drain away in the meantime.

A third time he blasted. Then sudden, terrible realization came that Demarzule was not absorbing the energy. It was being diverted, drawn aside before it even approached the Sirenian.

In something approaching panic, Underwood directed his senses to locate the source of the diversion, and found it in the twenty Earthmen sitting motionlessly about Demarzule.

Demarzule seemed to know the instant that Underwood became aware of the fact. "Yes," he said, "we have duplicated the abasa. Cancer is plentiful among you. In five thousand more years you would have stopped fighting it and learned how to use it. There are twenty of us. You would not have come had you known you would have that many to fight singlehanded, would you? Now it is too late!"

With that word, a wave, of paralyzing, destroying force swept over Underwood. How it was affecting him, what senses it was attacking, he did not know. He only knew that a flaming agony was burning out life, as if reluctant to give him a speedy, merciful death.

He must withdraw to the ship to recover his forces. He could never withstand the attack of twenty-one abasas.

Underwood relaxed and threw his powers back toward the ship—and failed!

Abruptly, the metallic glint of Demarzule's lips parted in a roar of laughter without merriment, but of triumph.

"No, my brave Earthling, you cannot retreat. You did not know that. For those who would challenge the Great One there is no retreat. Your decision is made, and you will fail and you will die—but only when I wish, and your fellow Earthmen will find amusement in toying with you as a cat with a mouse before I give the final blow that will destroy your rash, impatient ego."