“Jacaro’s missing,” said Denham savagely. “Don’t you understand? He could get through to the Golden City. These beast-things are proof somebody did. And these things came down the Tube that somebody travelled through. Jacaro wouldn’t send them, but somebody did. They’ve got collars around their necks! Who sent them? And why?”
Tommy’s eyes narrowed.
“If civilized men found the mouth of a Tube, it would seem like the mouth of an artificial tunnel or a cave—”
“And if annoying vermin, like Jacaro’s gunmen”—Denham’s voice was brittle—“had come out of it, why, intelligent men might send something living and deadly down it, as men on Earth will send ferrets down a rat-hole! To wipe out the breed! That’s what’s happened! Jacaro’s gone through and attacked the Golden City. They’ve found his Tube. And they’ve sent these things down….”
“If we found rats coming from a rat-hole,” said Tommy very quietly, “and ferrets went down and didn’t come up, we’d gas them.”
“And so,” Denham told him, “so would the Golden City.”
He pointed to a boxed double paragraph news story under leaded twenty-point headline: “Poisonous Fog Kills Wild Life.”
The story was not alarming. It said merely that state game wardens had found numerous dead game animals in a thinly-settled district near Coltsville, N.Y., and on investigation had found a bank of mist, all of half a mile across, which seemed to have caused the trouble. State chemists and biologists were investigating the phenomenon. Curiously, the bank of mist seemed not to dissipate in a normal fashion. Samples of the fog were being analyzed. It was probably akin to the Belgian fogs which on several occasions had caused much loss of life. The mist was especially interesting because in sunlight it displayed prismatic colorings. State troopers were warning the inhabitants of the neighborhood.
“The gassing’s started,” said Denham savagely. “I know a gas that shows rainbow colors. The Golden City uses it. So we’ve got to find Jacaro’s Tube and seal it, or only God knows what will come out of it next. I’m going off, Tommy. You and Smithers guard our Tube. Blow it up, if necessary. It’s dangerous. I’ll get some authority in Albany, and we’ll find Jacaro’s Tube and blast it shut.”