I hesitated there, wondering whether to call to him and tell him he was not alone and helpless, or to retire, satisfied that he was awake and prepared for any trouble that might come. But there were no further sounds from beyond the door, and I turned away and prepared to retrace my steps.
It was then that I became conscious of a light somewhere below. Not a light, rather, but where before had been absolute darkness there was now something else; a faint illumination which outlined the staircase well, and which was reddish in color.
(Note: It is worthy of consideration that when, later on, Halliday and I made our experiment with the red lamp, lighting it in the den and opening the door into the corridor, we secured much the same effect, save that in the experiment the resulting glow seeme
