Outside a railing that divided the room there were a few chairs, very few, because it was not the policy of the Exchange to maintain a waiting-room for clients. It was a quiet and brisk clearing house, not a loitering place nor a shop-window for the display of people who had brains to sell by the week or the month. The clients came and went rather rapidly; they were not encouraged to linger. Sometimes they were sent for, and after those occasions they usually disappeared from the "active-list" and became inconsequential incidents in the history of the Exchange. The Exchange had pride in the fact that it made quick turnovers of its stock; nothing remained very long on the shelves. And in times such as these there were no bargain sales in brains.

Mary Wayne paused for a second on the threshold as her eyes swiftly reviewed the details of the picture; then she closed the door gently behind her, conscious of a distinct feeling of encouragement. She had been apprehensive; she had faced an expected sense of humiliation. There had been in her mind an idea that she was about to become one of a clamorous crowd. But things were very much otherwise in the Brain Workers' Exchange—gratefully so.

She walked over to a desk, where a small brass sign said "Registry," sensing that this must be her first port of call. A young woman who sat at the desk glanced up, saw a stranger, reached for a form-card that lay on top of a neatly stacked pile and dipped a pen.

"Name, please," she said.

"Mary Wayne."

"Address?"

The address was given; it was that of a boarding-house in the Eighties, but Mary Wayne hoped that it would not be so identified in the mind of the recording angel, if, indeed, she should prove to be such.

"Married?"

"Oh, no," hastily. It seemed an absurd question, but the answer went down in a place left blank by the printer.

"Age?"