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时间: 2019年12月07日 19:17

Rhoda spoke pleadingly, but with the timidity which always attended her requests to her father, whose recent indulgence had never reached a point of weakness, and who clearly showed, in all his dealings with his daughter, that he was not carried away by his affection for her, but acted with the consciousness of a will unfettered by precedents, and perfectly able to choose its course without regard to what other people might expect of him. Miss Horatia Rattleton. Oh, I daresay he will come now, dear, said Rose McDougall, without raising her eyes from her sewing. 鈥業 don鈥檛 say anything at all, my dear,鈥?he said. 鈥楳r Silverdale has said it too often.鈥? Meusnier, experimenting in various ways, experimented with regard to the resistance offered by various shapes to the air, and found that an elliptical shape was best; he proposed to make the car boat-shaped, in order further to decrease the resistance, and he advocated an entirely rigid connection between the car and the body of the balloon, as indispensable to a dirigible.12 He suggested using three propellers, which were to be driven by hand by means of pulleys, and calculated that a crew of eighty would be required to furnish sufficient motive power. Horizontal fins were to be used to assure stability, and Meusnier thoroughly334 investigated the pressures exerted by gases, in order to ascertain the stresses to which the envelope would be subjected. More important still, he went into detail with regard to the use of air bags, in order to retain the shape of the balloon under varying pressures of gas due to expansion and consequent losses; he proposed two separate envelopes, the inner one containing gas, and the space between it and the outer one being filled with air. Further, by compressing the air inside the air bag, the rate of ascent or descent could be regulated. Lebaudy, acting on this principle, found it possible to pump air at the rate of 35 cubic feet per second, thus making good loss of ballast which had to be thrown overboard. Although French and German experiment in connection with the production of an airship which should be suitable for military purposes proceeded side by side, it is necessary to outline the development in the two countries separately, owing to the differing character of the work carried out. So far as France is concerned, experiment began with the Lebaudy brothers, originally sugar refiners, who turned their energies to airship construction in 1899. Three years of work went to the production of their first vessel, which was launched in 1902, having been constructed by them together with a balloon manufacturer named Surcouf and an engineer, Julliot. The Lebaudy airships were what is known as semi-rigids, having a spar which ran practically the full length of the gas bag to which it was attached in such a way as to distribute the load evenly. The car was suspended from the spar, at the rear end of which both horizontal and vertical rudders were fixed, whilst stabilising fins were provided at the stern of the gas envelope itself. The first of the Lebaudy vessels was named the 鈥楯aune鈥? its length was 183 feet and its maximum diameter 30 feet, while the cubic capacity was 80,000 feet. The power unit was a 40 horse-power Daimler motor, driving two propellers and giving a maximum speed of 26 miles per hour.349 This vessel made 29 trips, the last of which took place in November, 1902, when the airship was wrecked through collision with a tree. 鲜花网|花礼网-中国鲜花礼品网,鲜花速递网站,网上订花送花上门,同城鲜花快递网上花店 鈥榊es, sir. I heard yesterday of my mother鈥檚 death.鈥? � One piece of advice given to him by his mother, when he was about to start for England, cannot but cause a smile. She was at pains to assure him that it would be unnecessary to take off his hat to every person whom he might meet in the streets of London. Henry St. George, speaking of this in later years, continues: 鈥楤ut habit is strong; and even now, when I repair to the stables for my horse, I interchange bows with the coachman and the ostlers and all the little idle urchins whom I encounter in the mews.鈥?One would have been sorry indeed to see so graceful a habit altered. It might far better be imitated. Exceeding courtesy was through life characteristic of the man, and it descended in a marked degree upon many of his descendants, notably so upon Charlotte Maria, the A. L. O. E. of literature. 鈥榊es,鈥?she said softly, raising her eyes again. 鈥楢nd now shall we get on with the letters, Sir Thomas. There are still a good many not answered.鈥? This served his purpose. Clearly no suspicion of being tricked by an ingenious answer crossed the girl鈥檚 mind, and she paused a moment shielding her eyes with her hand and looking towards Bracebridge. That shelter from the sun concealed all her face but her mouth, and looking at her he thought that if her mouth alone was visible of her, he could have picked it out as hers among a thousand others. The full upper lip was the slightest degree irregular; it drooped a little on the right, falling over the join with the lower lip: it was as if it was infinitesimally swollen there. For one second of stinging desire he longed to shut down her hand over her eyes, and kiss that corner of her mouth. It must have been that about which the skylark sang....{239}