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Rh For half the night he continued his search, until presently he was brought to a sudden halt by the distant sound of squealing thoats.

Guided by the noise of these habitually angry beasts, he stole forward through the trees until at last he came upon a level, treeless plain, in the center of which a mighty city reared its burnished domes and vividly colored towers.

About the walled city the red man saw a huge encampment of the green warriors of the dead sea-bottoms, and as he let his eyes rove carefully over the city he realized that here was no deserted metropolis of a dead past.

But what city could it be? His studies had taught him that in this little-explored portion of Barsoom the fierce tribe of Torquasian green men ruled supreme, and that as yet no red man had succeeded in piercing to the heart of their domain to return again to the world of civilization.

The men of Torquas had perfected huge guns with which their uncanny marksmanship had permitted them to repulse the few determined efforts that nearby red nations had made to explore their country by means of battle fleets of airships.

That he was within the boundary of Torquas,