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.