CHAPTER XIII.

THE CAPTIVE EARTH-MAN. As we came out of the valley I had my first view of the Great City. It occupied a huge, mound-shaped circular mountain which rose alone out of the wide plain that spread before me. As far as I could see extended a rich muddy soil partially covered with water. A road led out of the valley, stretching across these wet fields toward the base of the mountain. It was built on an embankment some eight or ten feet high, of the red, metallic ore of the mountains. All along the base of this embankment…