"I have told them briefly what we are to do," Miela explained. "First, to rid the Great City of Tao's men, sending them back to the Twilight Country; and do this in all our other cities where they are making trouble. Then, when our nation is free from this danger, we will plan how to deal with Tao direct, for he must not again go to your earth.
"And when all that is done I have said you will do your best to make our men believe as you do, so that never again will our women marry only to lose all that makes their virginity so glorious."
[ CHAPTER XVI.
THE FIRE PLANET.]
I think I should explain now a little about the physical conformation of Mercury—the "lay of the land," so to speak—in order that the events I am about to describe may be more readily understood. It has already been made clear by Bob Trevor, I believe, that Mercury revolves on its axis only once during the time of its revolution around the sun. Thus, just as a similar condition always makes our moon present very nearly the same face to us, so Mercury presents always the same portion of its surface to the sun.
It will be understood, therefore, that, theoretically, there must be on Mercury but one spot where the sun always is directly overhead. It could not be seen, however, owing to the dense clouds. This spot approximates the center of the region known as the Fire Country.
So far as I could learn, it was here that human life on the planet began. Certainly it was the first region where civilization reached any height. When Columbus was discovering America great cities flourished in the Fire Country—cities of untold wealth and beauty, now fallen into ruins like the great cities of our own Aztec and Inca civilizations.
The Fire Country was then like the equatorial regions of earth—a dense, tropic jungle, hotter than most temperatures we have to bear, but still, by reason of its thick enveloping atmosphere of clouds, capable of supporting life in comparative comfort. Its inhabitants were dark‑skinned, but rather more like our Indians than Negroid races.
Then, several centuries ago—the exact time is uncertain, for no written records are kept on Mercury—came the Great Storms. Their cause was unknown—some widespread atmospheric disturbance. These storms temporarily parted the clouds in many places, allowing the direct rays of the sun to fall upon the planet's surface. The resulting temperature destroyed all life, withered all vegetation, with its scorching blast. The inhabitants of the Fire Country were killed by hundreds of thousands, their cities deserted, their land laid a desert waste.
These storms, which it appears began suddenly, have returned periodically ever since, making the region practically uninhabitable. Its surviving races, pushed outward toward the more temperate zone, were living, at this time I am describing, in a much lower state of civilization than the people of the Light Country—a civilization of comparative savagery. In the Light Country they were held as slaves.