“A nice racket,” Jason said, looking at the sealed covering on the engines. “Why don’t you just crack into them and fix them yourself, they can’t be very complex.”

“That is death!” Edipon gasped, and both D’zertanoj recoiled from the boxes at the thought. “We have tried that, in my father’s father’s day, since we are not superstitious like the slaves and know that these are man-made not god-made. However the tricky serpents of Appsala hide their secrets with immense cunning. If any attempt is made to break the covering horrible death leaks out and fills the air. Men who breathe the air die, and even those who are solely touched by it develop immense blisters and die in pain. The man of Appsala laughed when this happened to our people and after that raised the price even higher.”

Jason circled one of the boxes, examining it with interest, trailing Narsisi behind him at the end of the chain. The thing was higher than his head and almost twice as long. A heavy shaft emerged through openings on opposite sides, probably the power takeoff for the wheels. Through an opening in the side he could see inset handles and two small colored disks, and above this were three funnel-shaped openings shaped and painted like mouths. By standing on tiptoe Jason looked on top but there was only a flanged, sooty opening that must be for attachment of a smokestack. There was only one more opening, a smallish one in the rear, and no other controls on the garish container.

“I’m beginning to get the picture, but you will have to tell me how you work the controls.”

“Death before that,” Narsisi shouted. “Only my family — ”

“Will you shut up!” Jason shouted right back. “Remember? You’re not allowed to browbeat the help anymore. There are no secrets here. Not only that, but I probably know more about this thing than you do just by looking at it. Oil, water and fuel go in these three openings, you poke a light in somewhere, probably in that smoky hole under the controls, open one of those valves for fuel supply, another one is to make the engine go slower and faster, and the third is for your water feed. The disks are indicators of some kind.” Narsisi paled and stepped back. “So keep the trap shut while I talk to your dad.”

“It is as you say,” Edipon pointed. “The mouths must always be filled and woebetide if they shall go empty for the powers will halt or worse. Fire goes in here as you guessed, and when the green finger comes forward this lever may be turned for motion. The next is for great speed or going slow. The very last is under the sign of the red finger, which when it points indicates need, and the handle must be turned and held until the finger retires. White breath comes from the opening in back. That is all there is.”

“About what I expected,” Jason muttered and examined the container wall, rapping it with his knuckles until it boomed. “They give you the minimum of controls to run the thing, so you won’t learn anything about the basic principles involved. Without the theory you would never know what the handles control, or that the green indicator comes out when you have operating pressure or the red one when the water level is low in the boiler. Very neat. And the whole thing sealed up in a can and booby-trapped in case you have any ideas of going into business for yourself.

“The cover sounds like it is double walled, and from your description I would say that it has one of the vesicant war gases, like mustard gas, sealed inside there in liquid form. Anyone who tries to cut their way in will quickly forget their ambitions after a dose of that. Yet there must be a way to get inside the case and service the engine, they aren’t just going to throw them away after a few months’ use. And considering the level of technology displayed by this monstrosity I should be able to find the tricks and get around any other built-in traps. I think I’ll take the job.”

“Very well, begin.”

“Wait a minute, boss, you still have a few things to learn about hired labor. There are always certain working conditions and agreements involved, all of which I’ll be happy to list for you.”

VIII

“What I do not understand is why you must have the other slave?” Narsisi whined. “To have the woman of course is natural, as well as to have quarters of your own, my father has given his permission. But he also said that I and my brothers are to help you, that the secrets of the engine are to be revealed to no one else.”

“Then trot right over to him and get permission for the slave Mikah to join me in the work. You can explain that he comes from the same land that I do, and that your secrets are mere children’s toys to him. And if dad wants any other reasons tell him that I need skilled aid, someone who knows how to handle tools and who can be trusted to follow directions exactly as given. You and your brothers have entirely too many ideas of your own about how things should be done, and a tendency to leave details up to the gods and have a good bash with the hammer if things don’t work the way they should.”

Narsisi retired, seething and mumbling to himself while Jason huddled over the oil stove planning the next step. It had taken most of the day to lay down logs for rollers and to push the sealed engine out into the sandy valley, far from the well site; open space was needed for any experiments where a mistake could release a cloud of war gas. Even Edipon had finally seen the sense of this, though all of his tendencies were to conduct the experiments with great secretiveness behind locked doors. He had granted permission only after skin walls had been erected to form an enclosure that could be guarded; it was only incidental that they acted as a much-appreciated windbreak.

And after much argument the dangling chains and shackles had been removed from Jason’s arms and light-weight leg-irons substituted. He had to shuffle when he walked but his arms were completely free, a great improvement over the chains, even though one of the brothers kept watch with a cocked crossbow as long as Jason wasn’t fastened down. Now he had to get some tools and some idea of the technical knowledge of these people before he could proceed, which would necessarily entail one more battle over their precious secrets.

“Come on,” he called to his guard, “let’s find Edipon and give his ulcers another twinge.”

After his first enthusiasm the leader of the D’zertanoj was getting very little pleasure out of his new project.

“You have quarters of your own,” he grumbled, “and the slave woman to cook for you, and I have just given permission for the other slave to help you. Now more requests — do you want to drain all the blood from my body?”

“Let’s not dramatize too much. I simply want some tools to get on with my work, and a peek at your machine shop or wherever it is you do your mechanical work. I have to have some idea of the way you people solve mechanical problems before I can go to work on that box of tricks out there in the desert.”

“Entrance is forbidden — ”

“Regulations are snapping like straws today, so we might as well go on and finish off a few more. Will you lead the way?”

The guards were reluctant to open the refinery building gates to Jason, and there was much rattling of keys and worried looks. A brace of elderly D’zertanoj, stinking of oil fumes, emerged from the interior and joined in a shouted argument with Edipon whose will finally prevailed. Chained again, and guarded like a murderer, Jason was begrudgingly led into the dark interior, the contents of which was depressingly anticlimactic.

“Really from rubeville,” Jason sneered and kicked at the boxful of hand-forged and clumsy tools. The work was of the crudest, the product of a sort of neolithic machine age. The distilling retort had been laboriously formed from sheet copper and clumsily riveted together. It leaked mightily as did the soldered seams on the hand-formed pipe. Most of the tools were blacksmith’s tongs and hammers for heating and beating out shapes on the anvil. The only things that gladdened Jason’s heart were the massive drill press and lathe that worked off the slave-power drive belts. In the tool holder of the lathe was clamped a chip of some hard mineral that did a good enough job of cutting the forged iron and low-carbon steel. Even more cheering was the screw-thread advance on the cutting head that was used to produce the massive nuts and bolts that secured the caroj wheels to their shafts. It could have been worse. Jason sorted out the smallest and handiest tools and put them aside for his own use in the morning. The light was almost gone and there would be no more work this day.