"Why don't they jump in and destroy these fliers?" I asked.

"That would soon put a stop to the attacks, or at least the blacks would scarce be so bold. Why, see how perfectly unguarded they leave their craft, as though they were lying safe in their own hangars at home."

"The therns do not dare. They tried it once, ages ago, but the next night and for a whole moon thereafter a thousand great black battleships circled the Mountains of Otz, pouring tons of projectiles upon the temples, the gardens, and the courts, until every thern who was not killed was driven for safety into the subterranean galleries.

"The therns know that they live at all only by the sufferance of the black men. They were near to extermination that once and they will not venture risking it again."

As she ceased talking a new element was instilled into the conflict. It came from a source equally unlooked for by either thern or pirate. The great banths which we had liberated in the garden had evidently been awed at first by the sound of the battle, the yelling of the warriors and the loud report of rifle and bomb.

But now they must have become angered by the continuous noise and excited by the smell of new blood, for all of a sudden a great form shot from a clump of low shrubbery into the midst of a struggling mass of humanity. A horrid scream of bestial rage broke from the banth as he felt warm flesh beneath his powerful talons.

As though his cry was but a signal to the others, the entire great pack hurled themselves among the fighters.

Panic reigned in an instant. Thern and black man turned alike against the common enemy, for the banths showed no partiality toward either.

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