The vessel was now lurching nose downward, as that unbelievable wave sucked it in. My companions were awake, and I shouted half-incoherent orders to them as I turned on the full power of our cylinders and also set the electro-solar turbines going. The sides and ceiling of the coaster seemed to bend inward with the pressure as we sought to wrench ourselves free. My companions had flown to the machine-guns, they pumped them incessantly, and bolts of electronic force tore like a broadside of lightning into the mass that had engulfed us. We tried literally to blast ourselves out, with each gun revolving at the widest possible radius. I don’t know how it was ever done; but at last the pressure above us began to give, there was a glimmering of light through our rear ports; and pitching dizzily, we broke loose. But even as the light returned, something dripped on my bare arms from the ceiling—a thin rill of water-clear fluid that seared like vitriol and almost laid me out with the sheer agony as it ate into my flesh. I heard someone scream and fall, and turning my head, saw Manville writhing on the floor beneath a steady drip of the same fluid. The roof and walls of the coaster were rent in several places, and some of the rifts were widening momently. That execrable liquid, which doubtless served as both saliva and digestive juice, had been eating the adamantine-tempered metal like acid, and we had not escaped any too soon.

The next few minutes were worse than a whole herd of nightmares. Even with our double engine-power, even with the machine-guns still tearing at the mass beside us, it was a struggle to get away, to combat the malign extra-gravitational magnetism of that hellish life-substance. And all the while, Venusian air was pouring in through the rents and our atmosphere was becoming unbreathable. Also the refrigerating system was half-useless now, and we sweltered in a steaming inferno, till each of us donned his air-tight insulative suit in turn, while the others held to the guns and the steering. Manville had ceased to writhe, and we saw that he was dead. We would not have dared to look at him overlong, even if there had been time; for half his face and body were eaten away by the corroding liquid.

We soared gradually, till we could look down on the horror that had so nearly devoured us. There it was, mile on mile of it stretching up the mountain-side, with the farther end somewhere in the jungle below. It seemed impossible, in view of the distance we had traversed, that the thing was the same life-mass we had met earlier in the day. But whatever it was, it must have smelt us out somehow; and seemingly it didn’t mind scaling a mountain to get us. Or perhaps it was in the habit of climbing mountains. Anyway, it was hard to discourage, for our gun-fire seemed to make mere pin-holes in it that closed up again when the gunner’s aim shifted. And when we started to drop grenades upon it from our hard-won elevation, it merely throbbed and heaved a little more vehemently, and darkened to a cancerous red as if it were getting angry. And when we flew off on the way we had come, toward the jungle and the swamp beyond, the damnable thing started to flow backward beneath us along the lichen-mantled slope. Evidently it was determined to have us.

I reeled in the seat with the pain of my seared arms as I held our course. We were in no condition to continue the circuit of Venus; and there was nothing for it but a return to the Purple Mountains.

We flew at top speed; but that flowing mass of life—protoplasm, organism, or whatever it was—fairly raced us. At last we got ahead of it, where it slithered in mile-wide devastation through the jungle—but not very far ahead at that. It hung on interminably, and we all grew sick with watching it.

Suddenly we saw that the thing had ceased to follow us, and was veering off at a sharp angle.

“What do you make of that?” cried Markheim. We were all so amazed by the cessation of pursuit, that I halted the vessel and we hung in mid-air, wondering what had happened.

Then we saw. Another endless mass, of a vermin-like grey, was crawling through the jungle to meet the pink mass. The two seemed to rise up in sheer columns, like warring serpents, as they neared each other. Then they came together; and we could see that they were battling, were devouring each other, were gaining and losing alternately as they flowed back and forth in a huge area from which all vegetation was speedily blotted. At length the pink mass appeared to have won a decisive victory: it poured on and on, without cease, ingesting the other, driving it back. And we watched no longer, but resumed our flight toward the Purple Mountains.

I have no very distinct recollection of that flight: it is all a blur of incalescent vapors, of boundless, fuming forests, of blazing bitumen lakes and volcano-spouting marshes. I lived in a reeling eternity of pain, sickness, vertigo; and toward the last, a raging delirium in which I was no longer aware of my surroundings; except by fits and starts. I don’t know how I held on, how I kept the course: my subliminal mind must have done it, I suppose. The others were all pretty sick, too, and could not have helped me. I seemed to be fighting an immeasurable, formless monster in that delirium; and after a dozen aeons of inconclusive combat, I came out of it long enough to see that the Purple Mountains were jutting their horns from the vapors just ahead. Dimly I steered along the jungle-taken pass and across the plateau; and the glaring heavens turned to a sea of blackness, a sea that fell and bore me down to oblivion as I landed the coaster beside the glimmering bulk of the ether-ship.

Somehow, very tortuously and vaguely, I floated out of that sea of blackness. I seemed to take hours in regaining full awareness; and the process was painful and confusing, as if my brain were unwilling to function. When I finally came to myself, I was lying in my bunk on the ether ship, and Admiral Carfax and the three doctors of the expedition were beside me, together with Markheim and Rocher. They told me I had been unconscious for fifty hours. My collapse, they thought, had been partly due to unnatural nerve-strain and shock. But my arms were both in a terrible state from the ravages of the vitriolic animal fluid that had dripped upon them. It had been necessary to amputate my left arm at the elbow; and only the most skillful care had saved the other from a like fate. My companions, though ill to the point of nausea had retained consciousness, and had told the story of our unbelievable adventures.

“I don’t see how you drove the coaster,” said Carfax. This, from our reticent and praise-sparing chief, was an actual brevet.

My right arm was a long time in healing—indeed, it never became quite normal again, never regained the muscular strength and nervous quickness required for aviation or space-flying. And I wasn’t so sorry, either: my nerves were pretty badly shaken; and I was content to let others do their share, when the holes in the acid-eaten coaster had been caulked with metal melted by our heat-tubes, and another exploring party was sent out along the equator.

We waited for a hundred hours on the plateau in the Purple Mountains; but the coaster didn’t return. Radio communications with it had ceased after the first nine hours. The second coaster was put together, and went out with Admiral Carfax himself in charge. Markheim and Rocher also insisted on going along. We kept in touch with the vessel till it began to approach the enormous tundras in which the sunlit hemisphere of Venus terminates, and beyond which are the frozen realms of perpetual twilight and darkness. The radio reports were full of incredible things, and I won’t tell you how many of those moving life-masses were sighted, eating their way through the hideously fertile jungles or crawling out of the steam-enveloped Venusian seas that gave them birth. Nothing, however, was found of the first coaster. Then the reports ceased; and a black horror settled upon us who had remained in the ether-ship.