Itz didn't seem to care. She marched around my head and back again, now and then laid a tentative paw on my nose or chin, and kept up a steady rumbling purr. The feeling of affection I had for that cat right then was close to being one of my life's grand passions. My hands roamed over her scrawny frame, fingered again the khaffite collar I had whiled away an hour in fashioning for her aboard the lifeboat—
My head hit the stone wall with a crack I didn't even notice. In ten seconds I had released the collar clasp, pulled the collar from Itzenca's neck, thumbed the stiff khaffite out into a blade about ten inches long, and was scraping at the mortar beyond my head at fever heat.
They had fed me three times by the time the groove was nine inches deep on all sides of the block; and the mortar had hardened. But I was nearly through, I figured. I took a rest, then made another try at loosening the block. I thrust the blade into the slot, levered gently at the stone. If it was only supported on one edge now, as it would be if it were a little less than a foot thick, it should be about ready to go. I couldn't tell.
I put down my scraper, got into position, and pushed. I wasn't as strong as I had been; there wasn't much force in the push. Again I rested and again I tried. Maybe there was only a thin crust of mortar still holding; maybe one more ounce of pressure would do it. I took a deep breath, strained ... and felt the block shift minutely.
Now! I heaved again, teeth gritted, drew back my feet, and thrust hard. The stone slid out with a grating sound, dropped half an inch. I paused to listen: all quiet. I shoved again, and the stone dropped with a heavy thud to the floor outside. With no loss of time I pushed through behind it, felt a breath of cooler air, got my shoulders free, pulled my legs through ... and stood, for the first time in how many days....
I had already figured my next move. As soon as Itzenca had stepped out I reached back in, groped for the water bottle, the dry crusts I had been saving, and the wad of bread paste I had made up. I reached a second time for a handful of the powdered mortar I had produced, then lifted the stone. I settled it in place, using the hard bread as supports, then packed the open joint with gummy bread. I dusted it over with dry mortar, then carefully swept up the debris—as well as I could in the total darkness. The bread-and-water man would have a light and he was due in half an hour or so—as closely as I had been able to estimate the time of his regular round. I didn't want him to see anything out of the ordinary. I was counting on finding Foster filed away somewhere in the stacks, and I'd need time to try to release him.
I moved along the corridor, counting my steps, one hand full of breadcrumbs and stone dust, the other feeling the wall. There were narrow side branches every few feet: the access ways to the feeding holes. Forty-one paces from my slot I came to a wooden door. It wasn't locked, but I didn't open it. I wasn't ready to use it yet.
I went back, passed my hole, continued nine paces to a blank wall. Then I tried the side branches. They were all seven-foot stubs, dead ends; each had the eight-inch holes on either side. I called Foster's name softly at each hole ... but there was no answer. I heard no signs of life, no yells or heavy breathing. Was I the only one here? That wasn't what I had figured on. Foster had to be in one of these delightful bedrooms. I had come across the universe to see him and I wasn't going to leave Bar-Ponderone without him.
It was time to get ready for the bread man. I had a choice of trying to get back into my hole and replacing the block, or of hiding in one of the side branches. I thought it over for a couple of microseconds and decided against getting back in my tomb. If there were as many vacancies here as I guessed, I'd be safe in any one of the side passages but my own.