As they looked through their glasses, the two lads uttered exclamations of astonishment and admiration.

Below them could be seen an extensive city, built beside an arm of the sea, which, instead of being blue, was of an ethereal, rosy tint. There were towering palaces and noble buildings, vast embankments and terraces, surrounded by beautiful gardens, amidst which could be distinguished stately colonnades, winding streams, and glistening fountains and cascades.

The Ivenia swept downwards with a swift, gliding motion, in a series of wide circles, like some giant bird poised on outstretched wings. There was no vibration, no jar, no motion even of the wide-spreading wings as she sank lightly and gracefully through the air.

And as she descended, the air below became filled with what at first had the appearance of a great flight of birds.

Gerald asked what they were, and Monck bade him look again through his glasses. Then he saw that what he had mistaken for distant birds were in reality numbers of flying-machines mounting upwards to meet the Ivenia.

A little later these smaller air-craft were swarming round the great aerostat, the occupants uttering shouts and cries of joyous welcome to their returning king. These flying-machines were of all shapes and kinds, and they thronged round Ivanta's superb 'chariot of the skies' as might a swarm of steamers, yachts, and other craft round a mighty warship bearing our own king back to England's shores after a foreign trip.

Finally, the wondrous structure landed easily and quietly upon the ground in the midst of a vast crowd of people; and, as she came to rest, King Ivanta stepped out from the conning-tower and showed himself to the shouting throng.

Then, turning to Armeath and the others whom he had brought with him as guests, he said, with a charming mixture of royal dignity and kindly condescension, 'Welcome, my friends! Welcome to our world! Welcome to Mars!'

CHAPTER XII.

PRINCE ALONDRA.