"Cease action!" I ordered, and instantly the eager whine of the generators softened to a barely discernible hum. Two of the men, under orders, raced out to the injured man: the rest of us clustered around the first of the two to be freed from the terrible tentacles of the trees. His menore was gone, his tight-fitting uniform was in shreds, and blotched with blood. There was a huge crimson welt across his face, and blood dripped slowly from the tips of his fingers. "_God!_" he muttered unsteadily as kindly arms lifted him with eager tenderness. "They're alive! Like snakes. They--they're _hungry_!" "Take him to the ship," I ordered. "He is to receive treatment immediately," I turned to the detail that was bringing in the other victim. The man was unconscious, and moaning, but suffering more from shock than anything else. A few minutes under the helio emanations and he would be fit for light duty. * * * * * As the men hurried him to the ship, I turned to Dival. He was standing beside me, rigid, his face very pale, his eyes fixed on space. "What do you make of it, Mr. Dival?" I questioned him. "Of the trees?" He seemed startled, as though I had aroused him from deepest thought. "They are not difficult to comprehend, sir. There are numerous growths that are primarily carnivorous. We have the fintal vine on Zenia, which coils instantly when touched, and thus traps many small animals which it wraps about with its folds and digests through sucker-like growths. "On your own Earth there are, we learn, hundreds of varieties of insectivorous plants: the Venus fly-trap, known otherwise as the Dionaea Muscipula, which has a leaf hinged in the median line, with teeth-like bristles. The two portions of the leaf snap together with considerable force when an insect alights upon the surface, and the soft portions of the catch are digested by the plant before the leaf opens again. The pitcher plant is another native of Earth, and several varieties of it are found on Zenia and at least two other planets. It traps its game without movement, but is nevertheless insectivorous. You have another species on Earth that is, or was, very common: the Mimosa Pudica. Perhaps you know it as the sensitive plant. It does not trap insects, but it has a very distinct power of movement, and is extremely irritable. "It is not at all difficult to understand a carniverous tree, capable of violent and powerful motion. This is undoubtedly what we have here--a decidedly interesting phenomena, but not difficult of comprehension." It seems like a long explanation, as I record it here, but emanated as it was, it took but an instant to complete it. Mr. Dival went on without a pause: "I believe, however, that I have discovered something far more important. How is your menore adjusted, sir?" "At minimum." "Turn it to maximum, sir."