doctor. âThis is really whizzing. How does the saucer do it, Sprockets?â
âSir, as Iâve explained to you before, the saucer has hyper-sub-medio space inductors that are connected to a thought thingummy, so naturally we can fly as fast as thought.â
âNaturally,â said the doctor, âI remember. Ilium has merely to think for it to goâthis way or that way, and as fast as he wantsâand thatâs the way it goes. So of course we fly thoughtfully. Very simple indeed. How fast are we flying now?â
Sprockets spoke to Ilium, then translated: âOnly three hundred thousand miles a minute at the moment, sir. It is dreadfully slow, but he says if we go faster you might become abbledâI mean addledâeven with the nullifiers on. At the present rate, sir, we will land on Mars in six hours and seven minutes. As for Professor Katz and the Mongolians, of courseââ
âYes, yes? What about the rascals? Are we near them?â
âPractically abeam, sir. As nearly as I can compute, sir, they are six thousand and three miles, seven hundred and forty-two feet off to starboard. Ilium wants to know if you would like to swing over and have a look at their spaceship.â
âIndeed I would! I have the gravest suspicions about their ship,â said the doctor emphatically.
âDaddy,â said Jim, âdo you think their ship was built from the designs someone stole from you?â
âExactly,â snapped the doctor. âAnd I suspect Vladimir Katz. All he can do is filch and purloin, connive and prevaricate. He cannot create.â
âDaddy, what does âfilch and purloin, connive and prevaricateâ mean?â
âIt means less than I can say, and heâs a double-dyed rat to boot. Heaven preserve us! Whatâs that racket?â
They turned to see Rivets sitting up, blinking his eye lights rapidly.
âYeedle-de-yee! Jiggle-le-je!â Rivets was singing. âOh, Spwockets, I can twibble like a mocklingbird!â
Sprockets had his screwdriver and oil can out in a flash. It took hardly a second to fix the screw, but it was too late to change what the doctor had heard.
Dr. Bailey shook his head sadly. âIf only Iâd known in time, I could have sent him back to the factory. Now weâll be stuck on Mars with an abbled robot.â
4
They Abble the Professor
Sprockets wanted desperately to explain about poor Rivetsâ loose screw, which seemed to be getting looser no matter how he tightened it. But it was a bad moment to explain anything, for suddenly everyoneâs attention was taken by the Mongolian spaceship, which appeared off to starboard.
It was a long, gleaming rocketlike shapeâexactly the shape of the spaceship model in the doctorâs laboratory. Sprockets thought it looked very handsome indeed as it streaked through space, with the stars bright as diamonds beyond it and a stream of blue fire shooting from its tail.
âVery handsome,â said the doctor, thinking the same thing. âVery handsome, indeed. As naturally it would be, since I designed it.â Then all at once his mop of white hair began to bristle. âSprockets, tell Ilium to take us closer. It will ease my ire to see Vladimir Katz befuddledâand he is bound to be befuddled when he sees who has overtaken him in a purple saucer.â
âYes, sir,â said Sprockets. âBut I regret to remind you, sir, that although we will be able to see Professor Katz through our viewing ports, he will be unable to see us through ours. The saucerâs windows are of a special material that is transparent only from the inside.â
Even so, it did seem to ease the doctorâs mind slightly when he saw the look on the professorâs face as the saucer swung close. Prof. Vladimir Katz was a fuming, wheezing, waddling barrel of a man with no hair on his head, no neck under it, and a great many chins, possibly four or