"He's weak, but he'll be all right for a few minutes."
"Look, Doc, I don't want to kill anybody by making him work when he's likely to keel over, but we need Carlson if we ever needed any man. Darn it, why are there so very few men with supersensitive balance?"
"It's hereditary, and the human race is still mongrel by its own law," said Doc with a smile. "By which I mean that it is illegal to marry your own brother—or sister."
McBride laughed, and then went in to see Carlson.
"Carl," said McBride, "how do you feel?"
"Wobbly."
"How wobbly?"
"Not too bad. How're things?"
"We've been running around like waltzing mice for the past few hours, but we'll be ready for business in a few hours."
"I'll be needed."