"After the last flight the machine was carried back to camp and set down in what was thought to be a safe place. But a few minutes later, when engaged in conversation about the flights, a sudden gust of wind struck the machine and started to turn it over. All made a rush to stop it, but we were too late. Mr. Daniels, a giant in stature and strength, was lifted off his feet, and, falling inside between the surfaces, was shaken about like a rattle in a box as the machine rolled over and over. He finally fell out upon the sand with nothing worse than painful bruises, but the damage to the machine caused a discontinuance of experiments." "Thus," said the scientist, "we see the record aeroplane flight for 1903 was 853 feet while in 1911 a Wright biplane flew more than 3,000 miles from the Atlantic to the Pacific. In ten years more we may look back to our monoplanes and biplanes of to-day in the same way we do now on the first cumbersome 'horseless carriages' that were replaced by the high-powered automobiles we know now. Some experts in aeronautics say that we may even see the complete passing of the monoplane and biplane types in favour of some now unknown kind of aeroplane." Who knows but that the man to invent the perfect aeroplane will be one of the boy readers of this! Everywhere the making and flying of model aeroplanes by boys is looked upon, not only as play, but as a valuable and instructive sport for boys and young men of any age. One of the indications of this may be seen in the public interest taken in the tournaments of boys' model aeroplane clubs. Not only do crowds of grown people with no technical knowledge of aeroplanes attend the tournaments, but also older students of aviation who realize that among the young model fliers there may be another Orville or Wilbur Wright, a Blériot, or a Farman. So important is this knowledge of aviation considered that the principles and the practical construction of model aeroplanes are taught in many of the public schools. Instead of spending all their school hours in the study of books, the boys now spend a part of their time in the carpenter shop making the model aeroplanes which they enter in the tournaments. Of course, dozens of types of models are turned out, some good and some bad, but in the latter part of Chapter III is given a brief outline for the construction of one of the simplest and most practicable model aeroplanes. Not only the schools but the colleges also have taken up aviation, and nearly every college has its glider club, and the students work many hours making the gliders with which they contest for distance records with other clubs. As a consequence aviation has become a regular department of college athletics, and intercollegiate glider meets are a common thing.