"Nothing! There wasn't a thing I could do. We were already running at top speed."

"We're above it. Way above it. How?"

There was nothing to explain their astonishing velocity. Cameron, Anti, and Jordan were in the control compartment. Nona still sat huddled up, hands pressed tight against her head. There was no explanation at all, yet power was pouring into the gravital unit, as a long unused, actually useless dial was indicating.

"The gravital drive is working," Docchi blankly pointed out.

"Nonsense," said Anti. "I don't feel any weight."

"You don't," answered Docchi. "You won't. The gravital unit was originally installed to drive the ship. When that proved unsatisfactory, it was converted. The difference is slight but important. An undirected general field produces weight effects inside the ship. That's for passenger comfort. A directed field, outside the ship, will drive it. You can have one or the other, not both."

"But I didn't turn on the gravital drive," said Jordan in flat bewilderment. "I couldn't if I wanted to. It's disconnected."

"I would agree with you, except for one thing. It's working." Docchi stared at Nona, whose eyes were closed. "Get her attention," he said.

It was Jordan who gently touched her shoulder. She opened her eyes. On the instrument board, the needle of a once useless dial rose and fell.

"What's the matter with the poor dear?" asked Anti. "She's shaking."