He rubbed his eyes.  The riddle of his surroundings was confusing but his mind was quite clear—­evidently his sleep had benefited him.  He was not in a bed at all as he understood the word, but lying naked on a very soft and yielding mattress, in a trough of dark glass.  The mattress was partly transparent, a fact he observed with a sense of insecurity, and below it was a mirror reflecting him greyly.  About his arm—­and he saw with a shock that his skin was strangely dry and yellow—­was bound a curious apparatus of rubber, bound so cunningly that it seemed to pass into his skin above and below.  And this bed was placed in a case of greenish coloured glass (as it seemed to him), a bar in the white framework of which had first arrested his attention.  In the corner of the case was a stand of glittering and delicately made apparatus, for the most part quite strange appliances, though a maximum and minimum thermometer was recognisable.

The slightly greenish tint of the glass-like substance which surrounded him on every hand obscured what lay behind, but he perceived it was a vast apartment of splendid appearance, and with a very large and simple white archway facing him.  Close to the walls of the cage were articles of furniture, a table covered with a silvery cloth, silvery like the side of a fish, a couple of graceful chairs, and on the table a number of dishes with substances piled on them, a bottle and two glasses.  He realised that he was intensely hungry.

He could see no one, and after a period of hesitation scrambled off the translucent mattress and tried to stand on the clean white floor of his little apartment.  He had miscalculated his strength, however, and staggered and put his hand against the glass like pane before him to steady himself.  For a moment it resisted his hand, bending outward like a distended bladder, then it broke with a slight report and vanished—­a pricked bubble.  He reeled out into the general space of the hall, greatly astonished.  He caught at the table to save himself, knocking one of the glasses to the floor—­it rang but did not break—­and sat down in one of the armchairs.

When he had a little recovered he filled the remaining glass from the bottle and drank—­a colourless liquid it was, but not water, with a pleasing faint aroma and taste and a quality of immediate support and stimulus.  He put down the vessel and looked about him.

The apartment lost none of its size and magnificence now that the greenish transparency that had intervened was removed.  The archway he saw led to a flight of steps, going downward without the intermediation of a door, to a spacious transverse passage.  This passage ran between polished pillars of some white-veined substance of deep ultramarine, and along it came the sound of human movements, and voices and a deep undeviating droning note.  He sat, now fully awake, listening alertly, forgetting the viands in his attention.

Then with a shock he remembered that he was naked, and casting about him for covering, saw a long black robe thrown on one of the chairs beside him.  This he wrapped about him and sat down again, trembling.