From some dark place beyond, it was possible to peer in through the rectangular patch of paper as through a window, at the occupant of the bunk below, upon whom the shaded lamp directly poured its rays!
He examined more closely a lower part of the wall, which did not fall within the shadow of the purple lamp-shade; for he was thinking of the draught which had followed the opening of the trap. By this examination he learnt two things: The explanation of the draught, and that of a peculiar property possessed by the mural decorations. These (as Soames had observed before him) assumed a new form if one stared at them closely; other figures, figures human and animal, seemed to take shape and to peer out from behind the more obvious designs which were perceptible at a glance. The longer and the closer one studied these singular walls, the more evident the under design became, until it usurped the field of vision entirely. It was a bewildering delusion; but M. Max had solved the mystery.
There were two designs; the first, an intricate Chinese pattern, was painted or printed upon material like the finest gauze. This was attached over a second and vividly colored pattern upon thick parchment-like paper—as he learnt by the application of the point of his pocket-knife.
The observation trap was covered with this paper, and fitted so nicely in the opening that his fingers
