Mason tried again. With stiff wrists he tuned while perspiration stood out on his forehead, and the rest of us crowded close.

"It's no use," he said. "This pickup failure proves there isn't a vestige of animal life on Stragella—on this hemisphere of the planet, at least."

Navigator Norris took his pipe from his mouth and nodded. His face was expressionless. There was no indication in the man's voice that he had suffered another great disappointment, his sixth in less than a year.

"We'll go back now," he said, "and we'll try again. There must be some planet in this system that's inhabited. But it's going to be hard to tell the women."

Mason let the surveyor rod down with a crash. I could see the anger and resentment that was gathering in his eyes. Mason was the youngest of our party and the leader of the antagonistic group that was slowly but steadily undermining the authority of the Navigator.

This was our seventh exploratory trip after our sixth landing since entering the field of the sun Ponthis. Ponthis with its sixteen equal-sized planets, each with a single satellite. First there had been Coulora; then in swift succession, Jama, Tenethon, Mokrell, and R-9. And now Stragella. Strange names of strange worlds, revolving about a strange star.

It was Navigator Norris who told us the names of these planets and traced their positions on a chart for us. He alone of our group was familiar with astrogation and cosmography. He alone had sailed the spaceways in the days before the automatic pilots were installed and locked and sealed on every ship.

A handsome man in his fortieth year, he stood six feet three with broad shoulders and a powerful frame. His eyes were the eyes of a scholar, dreamy yet alive with depth and penetration. I had never seen him lose his temper, and he governed our company with an iron hand.

He was not perfect, of course. Like all Earthmen, he had his faults. Months before he had joined with that famed Martian scientist, Ganeth-Klae, to invent that all-use material, Indurate, the formula for which had been stolen and which therefore had never appeared on the commercial market. Norris would talk about that for hours. If you inadvertently started him on the subject a queer glint would enter his eyes, and he would dig around in his pocket for a chunk of the black substance.

"Did I ever show you a piece of this?" he would say. "Look at it carefully. Notice the smooth grainless texture—hard and yet not brittle. You wouldn't think that it was formed in a gaseous state, then changed to a liquid and finally to a clay-like material that could be worked with ease. A thousand years after your body has returned to dust, that piece of Indurate will still exist, unchanged, unworn. Erosion will have little effect upon it. Beside it granite, steel are nothing. If only I had the formula ..."