Now the volume of smoke coming from the coffer seemed to lessen, and the smoke itself to be less dense.

Across the room I saw something white move where the couch was.

There were several movements.

I could just catch the quick glint of white through the dense smoke in the fading light; for now the glow of the coffer began quickly to subside.

I could still hear Silvio, but his mewing came from close under; a moment later I could feel him piteously crouching on my foot.
Then the last spark of light disappeared, and through the Egyptian darkness I could see the faint line of white around the window blinds.
I felt that the time had come to speak; so I pulled off my respirator and called out: "Shall I turn up the light ?" There was no answer; so before the thick smoke choked me, I called again but more loudly: "Mr.Trelawny, shall I turn up the light ?" He did not answer; but from across the room I heard Margaret's voice, sounding as sweet and clear as a bell: "Yes, Malcolm!" I turned the tap and the lamps flashed out.