“And it was so much a matter of course that if they printed a picture of a criminal they never mentioned it if he were pock-marked.  It was no distinction.  But if he didn’t have the markings, they’d mention that!” He paused.  “Those pock-marks weren’t hereditary, but otherwise a blueskin is like a man who had them.  He can’t be anything else!”

“Then you think they’re human?”

“There’s never yet been a case of reverse evolution,” said Calhoun.  “Maybe Pithecanthropus had a monkey uncle, but no Pithecanthropus ever went monkey.”

She turned abruptly away.  But she glanced at him often during that day.  He continued to busy himself with those activities which make Med Ship life consistent with retained sanity.

Next day she asked without preliminary, “Don’t you believe the blueskins planned for the ship with the dead men to arrive at Weald and spread plague there?”

“No,” said Calhoun.

“Why?”

“It couldn’t possibly work,” Calhoun told her.  “With only dead men on board, the ship wouldn’t arrive at a place where the landing-grid could bring it down.  So that would be no good.  And plague-stricken living men wouldn’t try to conceal that they had the plague.  They might ask for help, but they’d know they’d instantly be killed on Weald if they were found to be plague victims.  So that would be no good, either!  No, the ship wasn’t intended to land plague on Weald.”

“Are you friendly to blueskins?” she asked uncertainly.

“Within reason,” said Calhoun, “I am a well-wisher to all the human race.  You’re slipping, though.  When using the word blueskin you should say it uncomfortably, as if it were a word no refined person liked to pronounce.  You don’t.  We’ll land on Orede tomorrow, by the way.  If you ever intend to tell me the truth, there’s not much time left.”

She bit her lips.  Twice, during the remainder of the day, she faced him and opened her mouth as if to speak, and then turned away again.  Calhoun shrugged.  He had fairly definite ideas about her, by now.  He carefully kept them tentative, but no girl born and raised on Weald would willingly go to Orede, with all of Weald believing that a shipload of miners preferred death to remaining there.  It tied in, like everything else that was unpleasant, to blueskins.  Nobody from Weald would dream of landing on Orede!  Not now!

A little before the Med Ship was due to break out from overdrive, the girl said very carefully, “You’ve been very kind.  I’d like to thank you.  I—­I didn’t really believe I would live to get to Orede.”

Calhoun raised his eyebrows.

“I wish I could tell you everything you want to know,” she added regretfully.  “I think you’re ... really decent.  But some thing....”

Calhoun said caustically, “You’ve told me a great deal.  You weren’t born on Weald.  You weren’t raised there.  The people of Dara—­notice that I don’t say blueskins, though they are—­the people of Dara have made at least one space ship since Weald threatened them with extermination.  There is probably a new food shortage on Dara now, leading to pure desperation.  Most likely it’s bad enough to make them risk landing on Orede to kill cattle and freeze beef to help.  They’ve worked out—­”