"Huh? What do you think they are? Skis?"

"Oh, I'm sorry! But you see, I've never seen a horse."

"What?"

"I have," announced Oscar, "in the zoo, that is."

"In a zoo?" repeated Tex.

"In the zoo at New Auckland."

"Oh-" said Tex. "I get it. You're a Venus colonial." Matt then recalled where he had heard Oscar's vaguely familiar lisp before-in the speech of a visiting lecturer. Tex turned to Pierre. "Pete, are you from Venus, too?"

"No, I'm-" Pete's voice was drowned out.

"Attention, please! Quiet!" The speaker was dressed in the severely plain, oyster-white uniform of a space cadet. "All of you," he went on, speaking into a hand amplifier, "who have odd serial numbers come with me. Bring your baggage. Even numbers wait where you are."

"Odd numbers?" said Tex. "That's me!" He jumped up.