"Nonsense, Hilda! Do not tease me. An emperor, too, may rule over a woman's heart." This was rather carrying the war into the opposite camp. Miss Fitzherbert thought it time to change the subject. They discussed the telegrams. Then Maud told Hilda how frightfully agitated Laurient was the previous evening. Finally they decided they would go to New Zealand the day after the next. They debated if they should proceed in their own air-cruiser or in the public one that left early every morning. It was about a sixteen hours' journey in the public conveyance, but in their own it would take less time. Besides, they wished to go straight to Dunedin, where the girls had a beautiful residence, and where their friends were chiefly located. Hilda represented Dunedin in the New Zealand Parliament, and local government honours had been freely open to her; but, under the tutelage of Mrs. Hardinge, she had preferred entering into federal politics, though she continued in the New Zealand Parliament. Most of the leading federal statesmen interested themselves with one or other Dominion government. There was such an absence of friction between the federal and the separate dominion governments that no inconvenience resulted from the dual attention, while it led to a more intimate knowledge of local duties. Maud bashfully remembered that Lady Taieri had asked them to go to Dunedin on her beautiful cruiser. "She was making up a party," said Maud; "and she mentioned that Colonel Laurient and Lord Montreal were amongst the number." Hilda saw the wistful look in Maud's eyes. "Let us go with Lady Taieri," she said; and so it was arranged. CHAPTER VIII. AIR-CRUISERS. We trust our readers will not be wearied because it is necessary to give them at some length an explanation concerning the aerial machines to which reference has so often been made as air-cruisers. It need scarcely be said that from time immemorial a great deal of attention has been directed to the question whether aerial travelling could he made subservient to the purposes of man. Balloons, as they were called, made of strong fabrics filled with a gas lighter than air, were to some extent used, but rarely for practical purposes. They were in considerable request for military objects, and it is recorded that Gambetta managed to get out of Paris in a balloon when that city was beleaguered by the German army in 1871. The principle of the balloon was the use of a vessel which, weighing, with all its contents, less than a similar volume of the atmosphere, would consequently rise in the air. But evidently no great progress could be made with such an apparatus. The low specific gravity of the atmosphere forbade the hope of its being possible to carry a heavy weight in great quantity on a machine that depended for its buoyancy on a less specific gravity. Besides, there was danger in using a fabric because of its liability to irreparable destruction by the smallest puncture.