lantern when I hear a little click. It's that transmitter. The little red and black disk is turning around on it. I just stand there watching it. It only runs for three or four minutes. And then it begins to get hot in there. I got scared. I ducked out of the hole and picked up Sykes. He didn't weigh much. I looked back in the hole. The cave was lit up. Red. The machines were cherry-red, straw-color, white, just that quick. They melted. I saw it. I ran. The machines grew cherry-red, then straw-colored, and finally melted. I don't hardly remember getting to the rope and tying Sykes on and climbing up and hauling him up after me. He was quiet then, but conscious. I carried him away until the light from the gulch stopped me. I turned around to watch. I could see a ways down into the gulch. It was fillin' up with lava. It was lightin' up the whole desert. And I never felt such heat. I ran again. I got to the car and dumped Sykes in. He shifted around on the seat some. I asked him how he felt. He didn't answer that but mumbled a lot of stuff. Something like this. "They knew we'd reached the atomic age. They wanted to be told when. The transmitter did just that. They came and took the recordings and refilled the machine. "They sealed off the room with something they thought only controlled atomic power could break into. This time the transmitter was triggered to human beings in that room. Your torch did it, Kemp—that three-hundred-years-in-the-future torch! They think we have atomic power! They'll come back!" "Who, doc? Who?" I says. "I don't know," he mumbles. "There'd be only one reason why someone—some creature—would want to know a thing like that. And that's so they could stop us." So I laughed at him. I got in and started the car and laughed at him. "Doc," I said, "we ain't goin' to be stopped now. Like the papers say, we're in the atomic age if it kills us. But we're in for keeps. Why, humanity would have to be killed off before it'd get out of this atomic age." "I know that, Kemp—I know—that's what I mean! What have we done? What have we done?" After that he's quiet a while and when I look at him