Castor explained that they were about to close up the pre­heater. Mr. Stone nodded. "Moving right along - good! Wait a minute; You'll just have to tear it down again to put in the - Or did they send those gaskets out to the ship? I didn't think they had come in yet?"

"What gaskets?" Pollux said innocently. Hazel glanced quickly at him but said nothing.

"The gaskets for the intermediate injector sequence, of course."

"Oh, those!" Pollux shrugged. "They were okay, absolutely perfect to nine decimal places - so we put 'em back in."

"Oh, you did? That's interesting. Tomorrow you can take them out again - and I'll stand over you when you put the new ones in."

Castor took over. "But Dad, Hazel said they were okay!"

Roger Stone looked at his mother. "Well, Hazel?"

She hesitated. She knew that she had not been sufficiently emphatic in telling the twins that their father's engineering instructions were to be carried out to the letter; on the other hand she had told them to check with him. Or had she? 'The gaskets were okay, Roger. No harm done."

He looked at her thoughtfully. "So you saw fit to change my instructions? Hazel, are you itching to be left behind?"

She noted the ominously gentle tone of his voice and checked an angry reply. "No," she said simply.

""No" what?"

"No, Captain."

"Not captain yet, perhaps, but that's the general idea." He turned to his sons. "I wonder if you two yahoos understand the nature of this situation?"

Castor bit his lip. Pollux looked at his twin, then back at his father. "Dad, you're the one who doesn't understand the nature of the situation. You're making a fuss over nothing. If it'll give you any satisfaction, we'll open it up again - but you'll simply see that we were right. If you had seen those gaskets, you would have passed them."

"Probably. Almost certainly. But a skipper's orders as to how he wants his ship gotten ready for space are not subject to change by a dockyard mechanic - which is what you both rate at the moment. Understand me?"

"Okay, so we should have waited: Tomorrow we'll open her up, you'll see that we were right and we'll close it up again."

"Wrong. Tomorrow you will go out, open it up, and bring the old gaskets back to me. Then you will both stay right here at home until the new gaskets arrive. You can spend the time con­templating the notion that orders are meant to be carried out."

Castor said, "Now just a minute, Dad! You'll put us days behind."

Pollux added, "Not to mention the hours of work you are making us waste already."

Castor: "You can't expect us to get the ship ready if you insist on jiggling our elbows!"

Pollux: "And don't forget the money we're saving you."

Castor: "Right! It's not costing you a square shilling!"

Pollux: "And yet you pull this "regulation skipper" act on us."

Castor: "Discouraging! That's what it is!"

"Pipe down!" Without waiting for them to comply he stood up and grasped each of them by the scruff of his jacket. Luna's one-sixth gravity permitted him to straight-arm them both; he held them high up off the floor and wide apart. They struggled helplessly, unable to reach anything.

"Listen to me," he ordered. "Up to now I hadn't quite decided whether to let you two wild men go along or not. But now my mind's made up."

There was a short silence from the two, then Pollux said mournfully, "You mean we don't go?"

"I mean you do go. You need a taste of strict ship's discipline a durn sight more than you need to go to school; these modern schools aren't tough enough for the likes of you. I mean to run a taut ship - prompt, cheerful obedience, on the bounce! Or I throw the book at you. Understand me? Castor?"

"Uh, yes, sir."

"Pollux?"

"Ayeaye,sir!"

"See that you remember it. Pull a fast-talk like that on me when we're in space and I'll stuff you down each other's throat." He cracked their heads together smartly and threw them away.

The next day, on the way back from the field with the old gaskets, the twins stopped for a few minutes at the city library. They spent the four days they had to wait boning up on space law. They found it rather sobering reading, particularly the part which asserted that a commanding officer in space, acting independently, may and must maintain his authority against any who might attempt to usurp or dispute it. Some of the cited cases were quite grisly. They read of a freighter captain who, in his capacity as chief magistrate, had caused a mutineer to be shoved out an airlock, there to rupture his lungs in the vacuum of space, drown in his own blood

Pollux made a face. "Grandpa," he inquired, "how would you like to be spaced?"

"No future in it. Thin stuff, vacuum. Low vitamin content"

"Maybe we had better be careful not to irritate Dad. This "captain" pose has gone to his head."

"It's no pose. Once we raise ship it's legal as church on Sunday. But Dad won't space us, no matter what we do."

"Don't count on it. Dad is a very tough hombre when he forgets that he's a loving father"

"Junior, you worry too much."

"So? When you feel the pressure drop remember what I said."

It had been early agreed that the ship could not stay the Cherub. There had been no such agreement on what the new name should be. After several noisy arguments Dr. Stone, who herself had no special preference, suggested that they place a box on the dining table into which proposed names might be placed without debate. For one week the slips accumulated; then the box was opened.

Dr. Stone wrote them down:

Dauntless Icarus

Jabberwock Susan B. Anthony

H. M. S. Pinafore Iron Duke

The Clunker Morning Star

Star Wagon Tumbleweed

Go-Devil Oom Paul

Onward Viking

" One would think," Roger grumbled, "that with all the self-declared big brains there are around this table someone would show some originality. Almost every name on the list can be found in the Big Register - half of them for ships still in commission. I move we strike out those tired, second-hand, wed-before names and consider only fresh ones."

Hazel looked at him suspiciously. "What ones will that leave?"

"Well -"

"You've looked them up, haven't you? I thought I caught you sneaking a look at the slips before breakfast."

"Mother, "your allegation is immaterial, irrelevant, and unworthy of you."

"But true. Okay; let's have a vote. Or does someone want to make a campaign speech?"

Dr. Stone rapped on the table with her thimble. "We'll vote. I've still got a medical association meeting to get to tonight." As chairman she ruled that any name receiving less than two votes in the first round would be eliminated. Secret ballot was used; when Meade canvassed the vote, seven names had gotten one vote each, none had received two.

Roger Stone pushed back his chair. "Agreement from this family is too much to expect . I'm going to bed. Tomorrow morning I'm going to register her as the R. S. Deadlock."

" Daddy, you wouldn't!" Meade protested.

"Just watch me. The R. S. Hair Shirt might be better. Or the R. S. Madhouse."

" Not bad," agreed Hazel. "It sounds like us. Never a dull moment."

"I, for one," retorted her son, "could stand a little decent monotony."

"Rubbish! We thrive on trouble. Do you want to get covered with moss?"