There was something horribly eager, horribly malignant, in the way they shone, so palely red, and in the fashion in which their blunt tentacles reached out toward the Ertak. I glanced up at the Earth clock on the wall. "The next hour," I said soberly, "cannot pass too quickly for me!" We had decelerated steadily during the hour, but we were still above maximum atmospheric speed when at last I gave the order to open the invaders with disintegrator rays. They were close, but of course the rays are not as effective in space as when operating in a more favorable medium, and I wished to make sure of our prey. I pressed the attention signal to Correy's post, and he answered instantly. "Ready, Mr. Correy?" "Ready, sir!" "Then commence action!" Before I could repeat the command to Hendricks, I heard the deepening note of the atomic generators, and knew Correy had already begun operations. Together, and silently, Kincaide and I bent over the television disk. We watched for a moment, and then, with one accord, lifted our heads and looked into each other's eyes. "No go, sir," said Kincaide quietly.[408] [408] I nodded. It was evident the disintegrator rays were useless here. When they struck into the horde of crescent-shaped things coming so hungrily toward us, the things changed from red to a sickly, yellowish pink, and seemed to writhe, as though in some discomfort, but that was all. "Perhaps at closer range...?" ventured Kincaide. "I think not. If Mr. Hendricks is correct—and I believe he is—these things aren't material; they're not matter, as we comprehend the word. And so, they can't be disintegrated." "Then, sir, how are we to best them?" "First, we'll have to know more about them. For one thing, their mode of attack. We should know