IN THE ATMOSPHERE FACTORY
Cautiously I opened the door of my apartment and, followed by Woola, sought the inner of the great doors. A wild scheme had come to me; I would attempt to force the great locks by the nine thought waves I had read in my host's mind.
Creeping stealthily through corridor after corridor and down winding runways which turned hither and thither I finally reached the great hall in which I had broken my long fast that morning. Nowhere had I seen my host, nor did I know where he kept himself by night.
I was on the point of stepping boldly out into the room when a slight noise behind me warned me back into the shadows of a recess in the corridor. Dragging Woola after me I crouched low in the darkness.
Presently the old man passed close by me, and as he entered the dimly lighted chamber which I had been about to pass through I saw that he held a long thin dagger in his hand and that he was sharpening it upon a stone. In his mind was the decision to inspect the radium pumps, which would take about thirty minutes, and then return to my bed chamber and finish me.
As he passed through the great hall and disappeared down the runway which led to the pump-
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