"What's wrong?"
"My arm. It feels numb."
Carver examined the wound, pursed his lips thoughtfully, but made no comment.
"It's numb," Fred said. "I wonder if they poison those spears."
"It's quite possible," Professor Carver admitted.
"They did!" Fred shouted. "Look, the cut is changing color already!"
The edges of the wound had a blackened, septic look.
"Sulfa," Carver said. "Penicillin, too. I wouldn't worry much about it, Fred. Modern Terran drugs—"
"—might not even touch this stuff. Open one of those tubes!"