In the last section an attempt has been made to show how, during what was from the design standpoint perhaps the most critical period, order gradually became evident out of chaos, ill-considered ideas dropped out through failure to make good, and, though there was still plenty of room for improvement in details, the bulk of the aeroplanes showed a general similarity in form and conception. There was still a great deal to be learnt in finding the best form of wing section, and performances were still low; but it had become definitely possible to say that flying had emerged from the chrysalis stage and had become a science. The period which now began was one of scientific development and improvement鈥攊n performance, man?uvrability, and general airworthiness and stability. How the War advanced design may be judged by comparison of the military requirements given for the British Military Trials of 1912, with performances of 1916 and 1917, when the speed of the faster machines had increased to over 150 miles an hour and Allied machines engaged enemy aircraft at heights ranging up to 22,000 feet. All pre-war records of endurance, speed, and climb went by the board, as the race for aerial superiority went on. A prize of 锟?00 was awarded to the steam engine as the lightest steam engine in proportion to its power. The engine and model together may be reckoned as Stringfellow鈥檚 best achievement. He used his 锟?00 in preparation for further experiments, but he was now an old man, and his work was practically done. Both the triplane and the engine were eventually bought for the Washington Museum; Stringfellow鈥檚 earlier models, together with those constructed by him in conjunction with Henson, remain in this country in the Victoria and Albert Museum. 色欲天天天影视综合网 Horatia. Who could have expected opposition from such a quarter? Suddenly their r?les were reversed, and she found herself in the position of sympathiser, if not comforter. 鈥榊es, but you thought him silly, and you thought me silly.鈥? 鈥?Agua?鈥?she asked. 鈥?Agua purificada?鈥? Cayley was a man in advance of his time, in many ways. Of independent means, he made the grand tour which was considered necessary to the education of every young man of position, and during this excursion he was more engaged in studies of a semi-scientific character than in the pursuits that normally filled such a period. His various writings prove that throughout his life aeronautics was the foremost subject in his mind; the Mechanic鈥檚 Magazine, Nicholson鈥檚 Journal, the Philosophical Magazine, and other periodicals of like nature bear witness to Cayley鈥檚 continued research into the subject of flight. He approached the subject after the manner of the trained scientist, analysing the mechanical properties of air under chemical and physical action. Then he set to work to ascertain the power necessary for aerial flight, and was one of the first to enunciate the fallacy of the hopes of successful flight by means of the steam engine of those days, owing to the fact that it was impossible to obtain a given power with a given weight.