PREFACE TO REPRINT EDITION The reader should grasp clearly the date at which this book was written. It was done in 1907: it appeared in various magazines as a serial in 1908 and it was published in the Fall of that year. At that time the aeroplane was, for most people, merely a rumour and the "Sausage" held the air. The contemporary reader has all the advantage of ten years' experience since th...