"I told you not to get up," she said crossly.

I didn't answer her. She left the door open and I was staring at it. Air seemed to rush in through the opening. The smothering, closed-in feeling left me. How absurd, I thought. You're ill. You're imagining all kinds of dangers.

"You'd better sit on the bed," the woman said. "Can you make it? I guess you can, getting dressed and all."

I went obediently to the bed. It was easier this time. Even the dizziness was subsiding. I could smell the fragrance of hot tea. On the tray there were also some dry crackers and a bowl of some kind of dried meal that looked like rice but was hard and crunchy like a seed. To my own surprise the sight of the food made me hungry.

I ate. The meal was tasteless but not unpleasant. The crackers and the tea were excellent. I seemed to feel strength pouring into me as I ate. By the time I had finished I felt almost normal.

I glanced up at the woman, who sat perched on the edge of the chair with a bright-eyed air of interest. She even cocked her head and peered at me sideways like a bird. She wore a thin little smile.

"Where are my shoes?" I asked suddenly.

She was startled. "Oh, we never wear shoes here!"

And for the first time I saw that her feet were bare. No wonder she moved so silently. I thought of hundreds of people padding throughout the building on silent, naked feet. The idea was more comical than frightening.

"And where is here?" I asked.