There were two exquisitely furnished saloons--one a kind of boudoir or drawing-room where everything that money could buy or luxury suggest as needful or ornamental was collected and arranged with thoughtful selection and perfect taste.

A short passage from these apartments led at one end to some small, daintily fitted sleeping-rooms beyond,--at the other was the steering cabin and accommodation for the pilot and observer.

The whole interior was lined with what seemed to be a thick rose-coloured silk of a singularly smooth and shining quality, but at a sign from Morgana, Rivardi and Gaspard touched some hidden spring which caused this interior covering to roll up completely, thus disclosing a strange and mysterious "installation" beneath.

Every inch of wall-space was fitted with small circular plates of some thin, shining substance, set close together so that their edges touched, and in the center of each plate or disc was a tiny white knob resembling the button of an ordinary electric bell.

There seemed to be at least two or three thousand of these discs--seen all together in a close mass they somewhat resembled the "suckers" on the tentacles of a giant octopus.