The apparent size of Mars was visibly increasing each time they looked at it, till at last it seemed to take up the whole of the firmament in front of them. It was a wonderful, and in many ways an awe-inspiring, sight. For, just as when they had been leaving the Earth it seemed to be our globe which was travelling away from them—not they from the Earth—so now Mars appeared to be coming towards them, and at a frightful pace. Majestic, magnificent, inconceivably grand, it certainly was; but there was something oppressive in its very grandeur, something awful in its swift, silent approach, something terrible in its overwhelming greatness. Seas and continents began to show upon its surface, till the wondering spectators could see the whole of one side laid out as on a gigantic map. And there, plain to the eye, were the so-called ’canals,’ those curious constructions or formations which our earthly astronomers have viewed through their telescopes and puzzled over for so many years, and which are supposed to be artificial canals upon a gigantic scale. At last, the _Ivenia_ entered the planet’s atmosphere, through which they had been viewing everything as through a faint-pinkish haze. Then a great change took place in the outward appearance of the aerostat. The upper covering was removed, the immense wings were spread, a beautifully carved and decorated ’figurehead,’ like the head of a colossal bird, was run out at one end and a tail-like addition at the other. Monck led Mr Armeath and his companions out on to the upper deck. ’You may now safely venture into the open air,’ he observed; ’for, unknown to you, the air within the aerostat has been gradually changing, and becoming denser. We are all, therefore, now acclimatised, and you will feel no ill effects.’ 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_.