"I'm warning you, Chomby," Cappy roared. "We'll stand just so much of this thing. We'll stay until we've studied you enough, but when we want to go, we're going—or we'll die trying."

"That time is not here," Chomby said, wrinkling his lips again.


The icy mental probing of the Mercurians grew familiar to Terry and Cappy. There was nothing the earthmen could think of that these eerie, repulsive-looking creatures did not understand. That the Mercurians read Terry's thoughts so easily was often embarrassing, for Terry knew that they were aware of his repugnance toward them, as well as Terry's distrust and fear.

But Chomby and his people seemed to accept Terry's opinion of them understandingly. Not one of them made a move to remove either Terry's or Cappy's guns.

After a first period of mental probing Chomby urged the earthmen to instruct the Mercurians in some simple crafts. Now the earthmen enjoyed the sense of superiority that previously had been a monopoly of the Mercurians. The simplest pieces of handiwork were almost beyond, the Mercurians. The hands of these creatures, without thumbs and with stiff fingers, were clumsy. Weaving was an arduous task. Construction of a simple, primitive thatched dwelling was attempted and abandoned, when Cappy found that it would require months to complete. It was not because the Mercurians did not understand what had to be done—they knew this the instant the terrestrials pictured the idea in their minds. But the tasks were nearly impossible for the Mercurians.

Terry taught a few of the creatures to write, but the rest could not master the process, although every one of them had learned to read by watching Terry's mind at work.

Cappy grew more contemptuous of the Mercurians as he watched their bungling efforts at the simplest human arts.

"We haven't anything to be afraid of from these creatures, Terry," he said.

Terry shook his head.