She glanced up at him, a quick, brave smile touching her lips, and then, as though the act was involuntary, she came close to his side and placed one of her hands in his.

He guessed that something within her that was beyond her conscious control was appealing to him for protection. He threw an arm about her, and thus they crossed the field. She did not draw away from him. It is doubtful that she realized that his arm was there, so engrossed was she in the mystery of the strange city before them.

They stopped before the gate. It was a mighty thing. From its construction Carthoris could but dimly speculate upon its unthinkable antiquity.

It was circular, closing a circular aperture, and the Heliumite knew from his study of ancient Barsoomian architecture that it rolled to one side, like a huge wheel, into an aperture in the wall.

Even such world-old cities as ancient Aaanthor were as yet undreamed of when the races lived that built such gates as these.

As he stood speculating upon the identity of this forgotten city, a voice spoke to them from above. Both looked up. There, leaning over the edge of the high wall, was a man.

His hair was auburn, his skin fair—fairer even than that of John Carter, the Virginian. His forehead was high, his eyes large and intelligent.

The language that he used was intelligible to the two below, yet there was a marked difference between it and their Barsoomian tongue.

“Who are you?” he asked. “And what do you here before the gate of Lothar?”

“We are friends,” replied Carthoris. “This be the princess, Thuvia of Ptarth, who was captured by the Torquasian horde. I am Carthoris of Helium, Prince of the house of Tardos Mors, Jeddak of Helium, and son of John Carter, Warlord of Mars, and of his wife, Dejah Thoris.”

“‘Ptarth’?” repeated the man. “‘Helium’?” He shook his head. “I never have heard of these places, nor did I know that there dwelt upon Barsoom a race of thy strange colour. Where may these cities lie, of which you speak? From our loftiest tower we have never seen another city than Lothar.”

Carthoris pointed toward the north-east.

“In that direction lie Helium and Ptarth,” he said. “Helium is over eight thousand haads from Lothar, while Ptarth lies nine thousand five hundred haads north-east of Helium.”*

Still the man shook his head.

“I know of nothing beyond the Lotharian hills,” he said. “Naught may live there beside the hideous green hordes of Torquas. They have conquered all Barsoom except this single valley and the city of Lothar. Here we have defied them for countless ages, though periodically they renew their attempts to destroy us. From whence you come I cannot guess unless you be descended from the slaves the Torquasians captured in early times when they reduced the outer world to their vassalage; but

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*On Barsoom the ad is the basis of linear measurement. It is the equivalent of an Earthly foot, measuring about 11·694 Earth inches. As has been my custom inthe past, I have generally translated Barsoomian symbols of time, distance, etc., into their Earthly equivalents, as being more easily understood by Earth readers. For those of a more studious turn of mind it may be interesting to know theMartian table of linear measurement, and so I give it here:

10 sofads = 1 ad.

200 ads = 1 haad.

100 haads = 1 karad.

360 karads = 1 circumference of Mars at equator.

A haad, or Barsoomian mile, contains about 2,339 Earth feet. A karad is one degree. A sofad about 1·17 Earth inches. we had heard that they destroyed all other races but their own.”

Carthoris tried to explain that the Torquasians ruled but a relatively tiny part of the surface of Barsoom, and even this only because their domain held nothing to attract the red race; but the Lotharian could not seem to conceive of anything beyond the valley of Lothar other than a trackless waste peopled by the ferocious green hordes of Torquas.

After considerable parleying he consented to admit them to the city, and a moment later the wheel-like gate rolled back within its niche, and Thuvia and Carthoris entered the city of Lothar.

All about them were evidences of fabulous wealth. The façades of the buildings fronting upon the avenue within the wall were richly carven, and about the windows and doors were ofttimes set foot-wide borders of precious stones, intricate mosaics, or tablets of beaten gold bearing bas-reliefs depicting what may have been bits of the history of this forgotten people.

He with whom they had conversed across the wall was in the avenue to receive them. About him were a hundred or more men of the same race. All were clothed in flowing robes and all were beardless.

Their attitude was more of fearful suspicion than antagonism. They followed the newcomers with their eyes; but spoke no word to them.

Carthoris could not but notice the fact that though the city had been but a short time before surrounded by a horde of bloodthirsty demons yet none of the citizens appeared to be armed, nor was there sign of soldiery about.

He wondered if all the fighting men had sallied forth in one supreme effort to rout the foe, leaving the city all unguarded.