Edgar Rice Burroughs: A Princess of Mars

21. CHAPTER XXI: AN AIR SCOUT FOR ZODANGA (continued)

This ray, like the ninth ray, is unknown on Earth, but the Martians have discovered that it is an inherent property of all light no matter from what source it emanates. They have learned that it is the solar eighth ray which propels the light of the sun to the various planets, and that it is the individual eighth ray of each planet which "reflects," or propels the light thus obtained out into space once more. The solar eighth ray would be absorbed by the surface of Barsoom, but the Barsoomian eighth ray, which tends to propel light from Mars into space, is constantly streaming out from the planet constituting a force of repulsion of gravity which when confined is able to lift enormous weights from the surface of the ground.

It is this ray which has enabled them to so perfect aviation that battle ships far outweighing anything known upon Earth sail as gracefully and lightly through the thin air of Barsoom as a toy balloon in the heavy atmosphere of Earth.

During the early years of the discovery of this ray many strange accidents occurred before the Martians learned to measure and control the wonderful power they had found. In one instance, some nine hundred years before, the first great battle ship to be built with eighth ray reservoirs was stored with too great a quantity of the rays and she had sailed up from Helium with five hundred officers and men, never to return.

Her power of repulsion for the planet was so great that it had carried her far into space, where she can be seen today, by the aid of powerful telescopes, hurtling through the heavens ten thousand miles from Mars; a tiny satellite that will thus encircle Barsoom to the end of time.

The fourth day after my arrival at Zodanga I made my first flight, and as a result of it I won a promotion which included quarters in the palace of Than Kosis.

As I rose above the city I circled several times, as I had seen Kantos Kan do, and then throwing my engine into top speed I raced at terrific velocity toward the south, following one of the great waterways which enter Zodanga from that direction.