Chapter III
SUBMERGED
The chamber which was destined to be the scene of our unforgettable experience was a charmingly feminine sitting room, some fourteen or sixteen feet square. At the end of it, divided by a curtain of red velvet, was a small apartment which formed the Professor's dressing-room. This in turn opened into a large bedroom. The curtain was still hanging, but the boudoir and dressing-room could be taken as one chamber for the purposes of our experiment. One door and the window-frame had been plastered round with varnished paper, so as to be practically sealed. Above the other door, which opened on to the landing, there hung a fanlight which could be drawn by a cord when some ventilation became abso-
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