  | PAGE | | The Fall of Icarus | Frontispiece | | The Aviator | 3 | | The Santos-Dumont “Demoiselle” | 4 | | View from a Balloon | 9 | | Anatomy of a Bird’s Wing | 10 | | Flight of a Bird | 11 | | In a Meteoric Shower | 13 | | How a Boat Tacks | 15 | | Octave Chanute | 18 | | Pressure of the Wind | 19 | | Forces Acting on a Kite | 20 | | Sustaining Force in the Aeroplane | 23 | | Direct Lifting and Resisting Forces | 24 | | Shapes of Planes | 26 | | Balancing Sail | 28 | | Roe’s Triplane at Wembley | 30 | | Action of the Steering Rudder | 31 | | Recent Type of Wright Biplane | 31 | | Circular Flight | 33 | | The Aileron | 35 | | Wing Tipping | 36 | | Wing Warping | 37 | | The Gyroscope | 39 | | Diurnal Temperatures at Different Heights | 45 | | Seasonal Variation in Wind Velocities | 47 | | The Wind Rose for Mt. Weather, Va. | 49 | | Diagram of Parts of a Drifting Balloon | 51 | | Glidden and Stevens Getting Away in the “Boston” | 52 | | Relative and Absolute Balloon Velocities | 53 | | Field and Speed | 53 | | Influence of Wind on Possible Course | 54 | | Count Zeppelin | 55 | | Buoyant Power of Wood | 57 | | One Cubic Foot of Wood Loaded in Water | 58 | | Buoyant Power of Hydrogen | 59 | | Lebaudy’s “Jaune” | 60 | | Air Balloon | 62 | | Screw Propeller for Altitude Control | 66 | | Balloon with Ballonets | 67 | | Construction of the Zeppelin Balloon | 68 | | The Equilibrator | 69 | | Henry Giffard’s Dirigible | 71 | | Dirigible of Dupuy de Lome | 72 | | Tissandier Brothers’ Dirigible Balloon | 73 | | The “Baldwin” | 74 | | The “Zeppelin” on Lake Constance | 75 | | The “Patrie” | 77 | | Manufacturing the Envelope of a Balloon | 79 | | Andr&
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