He had a sheaf of health slips from the examiners on the ground below. There was one slip for each passenger. It certified that so-and-so had been examined and could safely be admitted to the Star Queen's air, her four restaurants, her two swimming pools, her recreation areas and the six levels of passenger cabins the ship contained.
He impatiently watched the people go by. Health slips or no health slips, he looked them over. A characteristic gait or a typical complexion tint, or even a certain lack of hair luster, could tell him things that ground physicians might miss. In such a case the passenger would go back down again. It was not desirable to have deaths on a liner in space. Of course nobody was ever refused passage because of chlorophage. If it were ever discovered, the discovery would already be too late. But the health regulations for space travel were very, very strict.
He looked twice at a young woman as she passed. Despite applied complexion, there was a trace of waxiness in her skin. Nordenfeld had never actually seen a case of chlorophage. No doctor alive ever had. The best authorities were those who'd been in Patrol ships during the quarantine of Kamerun when chlorophage was loose on that planet. They'd seen beamed-up pictures of patients, but not patients themselves. The Patrol ships stayed in orbit while the planet died. Most doctors, and Nordenfeld was among them, had only seen pictures of the screens which showed the patients.
He looked sharply at the young woman. Then he glanced at her hands. They were normal. The young woman went on, unaware that for the fraction of an instant there had been the possibility of the landing of the Star Queen on Altaira, and the destruction of her space drive, and the establishment of a quarantine which, if justified, would mean that nobody could ever leave Altaira again, but must wait there to die. Which would not be a long wait.
A fat man puffed past. The gravity on Altaira was some five per cent under ship-normal and he felt the difference at once. But the veins at his temples were ungorged. Nordenfeld let him go by.
There appeared a white-haired, space-tanned man with a briefcase under his arm. He saw Nordenfeld and lifted a hand in greeting. The doctor knew him. He stepped aside from the passengers and stood there. His name was Jensen, and he represented a fund which invested the surplus money of insurance companies. He traveled a great deal to check on the business interests of that organization.
The doctor grunted, "What're you doing here? I thought you'd be on the far side of the cluster."
"Oh, I get about," said Jensen. His manner was not quite normal. He was tense. "I got here two weeks ago on a Q-and-C tramp from Regulus. We were a ship load of salt meat. There's romance for you! Salt meat by the spaceship load!"
The doctor grunted again. All sorts of things moved through space, naturally. The Star Queen carried a botanical collection for a museum and pig-beryllium and furs and enzymes and a list of items no man could remember. He watched the passengers go by, automatically counting them against the number of health slips in his hand.