Jack was almost twice his size, but he handed over the pistol with the air of a rebuked schoolboy.
"When you learn how to use it, I'll give it back to you," said Edmund sternly, and that closed the incident.
Then we began gradually to put on speed, and as the ground was icy smooth and entirely unobstructed, we were soon traveling at the rate of sixty miles an hour. The plan of the sleds worked like magic, and after their first terror had passed away it was plain to be seen that the natives enjoyed the new sensation immensely. And, indeed, it was a glorious spin!
But in a little while a danger developed which we had not thought of. It arose from the existence of other caverns whose mouths opened upon the plain. To have precipitated the sleds into these would have been fatal. Luckily, shafts of light issued from all of them, and warned by these, we managed to avoid the danger. But it was not entirely passed before we had traveled at least a hundred miles. It was like an immense city of prairie dogs without mounds. The cavern that we had discovered on our arrival was evidently situated on the outskirts of the group, and now we were passing through the center of it. Occasionally we saw a huge white form disappear in one of the holes as we swiftly approached, but that was all we beheld of the inhabitants. But the spectacle of the shafts of light rising all around us was amazing. When we were in the midst of it Edmund hesitated for a moment, muttering that we had been too hasty and should have remained longer to study the peculiarities of this wonderful world of night; but finally he decided to keep on, and soon afterwards we saw the last of the caverns. Then, as there appeared to be no obstructions of any kind, the speed was worked up to a hundred miles an hour. Going straight ahead as we did, there was no danger of the sleds being overturned.
Having, as Edmund had calculated, about five thousand miles to go before reaching the edge of the sun-illuminated hemisphere, it was evident that, at our present rate of progress, we should arrive there in a little over two days by the calendar clock. We guided our course by the stars, and for me one of the most interesting things was to see the earth sinking toward the horizon, accompanied by the stars, as if the heavens were revolving in a direction opposed to our line of travel. We smoked and talked and ate and slept in the old way, while the marvelous mouths in the wall resumed their strange deglutition. Thus the time passed, without ennui, until, unexpectedly, a new phenomenon captured our attention.
Ahead, through the peephole, Edmund had descried again the flaming spires which had so astonished us on our approach to Venus. But now their appearance was splendid and imposing beyond words. Above them rose an arc of pearly light which grew higher every hour. And with the arc of light rose the flames also. At the same time they seemed to spread to the right and the left, until they were simultaneously visible from both of the side windows of the car. Their colors were wonderful—red, green, purple, orange—all the hues of the prism.
"There is the old mystery again," exclaimed Edmund, "and I can no more explain it now than I could when we first saw it on nearing the planet. The arc of light above is natural enough; it's simply the dawn. The sun never rises on this side of Venus, but it will rise for us because we are approaching it, and the light is the first indication that we are getting near enough to the border between day and night for some of the sun's rays to be bent over the horizon by refraction. But those flames! See how steady they are as a whole, and yet how they change color like a slowly turning prism."
"Don't, for God's sake, run us into a conflagration," said Jack. "I'm ready to believe anything of this topsy-turvy old planet, and I shouldn't be surprised if the other side is all fire as this one is all frost. I can stand these hairy beasts, but I'll be hanged if I want to be introduced among salamanders."
"That's not real fire," said Edmund. "When we get a little nearer we can see what it is. In the meantime I'll try to think it out."
The result of Edmund's meditations, when he announced it to us, an hour later, awoke as much amazement in our minds as anything that had yet occurred. He had been sitting silent in his corner, occasionally taking a glimpse through the peephole, or one of the windows, when suddenly he slapped his thigh, and springing to his feet, exclaimed: