XI. THE WIRELESS TELEGRAPH UP TO THE MINUTE 332 The Scientist Talks of Amateur Wireless Operators. The Great Development of Wireless That Has Enabled It to Save Three Thousand Lives. Long Distance Work of the Modern Instruments. XII. MORE MARVELS OF SCIENCE 352 Color Photography, the Tungsten Electric Lamp, the Pulmotor, and Other New Inventions Investigated by Our Boy Friend. LIST OF ILLUSTRATIONS Wilbur Wright _Frontispiece_ FACING PAGE The First Wright Aeroplane 4 The First Wright Glider 5 The Second Wright Glider 5 A Long Glide 5 Motor of the Wright Biplane 12 A 16-Cylinder, 100-Horsepower Antoinette Motor 12 An 8-Cylinder, 50-Horsepower Curtiss Motor 12 Standard Gnome Aeroplane Motor 13 A 14-Cylinder, 100-Horsepower Gnome Motor 13 Testing a Gnome Motor on a Gun Carriage 13 Model Aeroplane Fliers 16 A Modern College Man's Glider 17 Otto Lilienthal Making a Flight in His Glider 17 The Chanute Type Glider 32 The Herring Glider 32 An Early Helicopter 32 Prof. Samuel Pierpont Langley 33 Sir Hiram Maxim 33 Octave Chanute 33 Langley's Steam Model 36 The Maxim Aeroplane 36 Medals Won by the Wright Brothers 37 The First Santos-Dumont Aeroplane 44 The Cross-Channel Type Blériot Monoplane 44 A Voisin Biplane 44 Glenn Curtiss About to Make a Flight 45 Henri Farman Starting Aloft with Two Passengers 45 Louis Blériot 45 Glenn Curtiss Making a Flight in the _June Bug_ 52 Orville Wright Making a Flight at Fort Myer 52 The First Letter Ever Written Aboard an Aeroplane in Flight 53 The Goddess of Liberty 60 First Actual War Expedition of an Aeroplane 61 War Manoeuvres 61