"Quite so, quite so; do so by all means. Most happy, I'm sure. Ah! beautiful model. Comes down as easily as a bird. Capital mechanism. What's your motive-power? Gas, electricity--no, not steam, no funnels! Humph! Very ingenious. Always said it would be done some day. Build flying navies next, and be fighting in the clouds. Then there'll be general smash. Serve 'em right. Fools to fight. Why can't they live in peace?" While Louis Holt was running along in this style, jerking his words out in little short snappy sentences, and fussing about round the air-ship, she had sunk gently to the earth, and her passengers had disembarked. Arnold for the time being took no notice of the questions with regard to the motive-power, but introduced first himself, then the ladies, and then Colston, to Louis Holt, who may be described here, as elsewhere, as a little, bronzed, grizzled man, anywhere between fifty-five and seventy, with a lean, wiry, active body, a good square head, an ugly but kindly face, and keen, twinkling little grey eyes, that looked straight into those of any one he might be addressing. The introductions over, he was invited on board the _Ariel_, and a few minutes later, in the deck-saloon, he was chattering away thirteen to the dozen, and drinking with unspeakable gusto the first glass of champagne he had tasted for nearly five years. CHAPTER XVIII. A NAVY OF THE FUTURE. Arnold's instructions from the Council had been to remain in Aeria, and make a thorough exploration of the wonderful region described in Louis Holt's manuscript, until the time came for him to meet the _Avondale_, the steamer which was to bring out the materials for constructing the Terrorists' aërial navy. Louis Holt and his faithful retainer, during the three years and a half that they had been shut up in it from the rest of the world, had made themselves so fully acquainted with its geography that very little of its surface was represented by blanks on the map which the former had spent several months in constructing, and so no better or more willing guides could have been placed at their service than they were. Holt was an enthusiastic naturalist, and he descanted at great length on the strangeness of the flora and fauna that it had been his privilege to discover and classify in this isolated and hitherto unvisited region. It appeared that neither its animals nor its plants were quite like those of the rest of the continent, but seemed rather to belong to an anterior geological age.