Not until their lights were no longer discernible did I venture to flash my little lamp upon my compass, and then I found to my consternation that a fragment of the projectile had utterly destroyed my only guide, as well as my speedometer. It was true I could follow the stars in the general direction of Helium, but without knowing the exact location of the city or the speed at which I was traveling my chances for finding it were slim.
Helium lies a thousand miles southwest of Zodanga, and with my compass intact I should have made the trip, barring accidents, in between four and five hours. As it turned out, however, morning found me speeding over a vast expanse of dead sea bottom after nearly six hours of continuous flight at high speed. Presently a great city showed below me, but it was not Helium, as that alone of all Barsoomian metropolises consists in two immense circular walled cities about seventy-five miles apart and would have been easily distinguishable from the altitude at which I was flying.
Believing that I had come too far to the north and west, I turned back in a southeasterly direction, passing during the forenoon several other large cities, but none resembling the description which Kantos Kan had given me of Helium. In addition to the twin-city formation of Helium, another distinguishing feature is the two immense towers, one of vivid scarlet rising nearly a mile into the air from the center of one of the cities, while the other, of bright yellow and of the same height, marks her sister.