He bent, sniggering, to look at my pass.

"That's right, pal," I said, and slugged him.

Arthur screamed at me with a shrill blast of steam as I came in. But only once. I wasn't there for conversation. I began ripping apart his comfy little home of steel braces and copper wires, and it didn't take much more than a minute before I had him free. And that was very fortunate because, although I had tied up the guard, I hadn't done it very well, and it was just about the time I had Arthur's steel case tucked under my arm that I heard a yelling and bellowing from down the stairs.

The guard had got free.

"Keep calm, Arthur!" I ordered sharply. "We'll get out of this, don't you worry!"

But he wasn't worried, or anyway didn't show it, since he couldn't. I was the one who was worried. I was up on the second floor of the plant, in the control center, with only one stairway going down that I knew about, and that one thoroughly guarded by a man with a grudge against me. Me, I had Arthur, and no weapon, and I hadn't a doubt in the world that there were other guards around and that my friend would have them after me before long.

Problem. I took a deep breath and swallowed and considered jumping out the window. But it wasn't far enough to the ground.

Feet pounded up the stairs, more than two of them. With Arthur dragging me down on one side, I hurried, fast as I could, along the steel galleries that surrounded the biggest boiler. It was a nice choice of alternatives—if I stayed quiet, they would find me; if I ran, they would hear me, and then find me.

But ahead there was—what? Something. A flight of stairs, it looked like, going out and, yes, up. Up? But I was already on the second floor.

"Hey, you!" somebody bellowed from behind me.

I didn't stop to consider. I ran. It wasn't steps, not exactly; it was a chain of coal scoops on a long derrick arm, a moving bucket arrangement for unloading fuel from barges. It did go up, though, and more important it went out. The bucket arm was stretched across the clogged roadway below to a loading tower that hung over the water.

If I could get there, I might be able to get down. If I could get down—yes, I could see it; there were three or four mahogany motor launches tied to the foot of the tower.

And nobody around.

I looked over my shoulder, and didn't like what I saw, and scuttled up that chain of enormous buckets like a roach on a washboard, one hand for me and one hand for Arthur.