Balloons, 120 " spiders, 27 Birds as thermo-dynamic machines, 153 " Two classes of, 23 Bleriot's machine, 113 Boiler experiments, 156 Brayton's gas engine, 154 British war balloon, 159, 162 Building up of my large screws, 41 Burner employed in my experiments, 157
Character of text-books recently published, 1 Circulation of air produced by differences in temperature, 27 Cody's kite, 28, 30 Comparative value of different motors, 151 Conclusions regarding air currents, 21 Condensers, Testing of, 52 Condenser tubes, 60 Continental flying machines, 9 Crystal Palace experiments, 72-76
Darwin on the flight of condors, 11 Deflection of air coming in contact with aeroplanes, 2 De la Grange machine, The, 110 "Dirigible" No 2, 159, 162 Drift at various distances from center to center, Table of, 58 Dynagraphs, 136 Dynamic energy of animals, 127
Eagles, Flight of, 19 Efficiency of screw propellers, 147 " screws in steamships, 47 Energy developed by a bird, 13 Engines, 153 Equivalent inclinations, 115 " velocities, 116 Experiments of Count Zeppelin, 124 " Horatio Philipps, 9, 118, 119, 145 " Lord Rayleigh in reference to Newton's Law, 6 " Professor Langley, 9, 62, 99, 109 " Wright Bros., 109 Experiments to show efficiency of Screw propellers, 33 " with apparatus attached to rotating arm, 62 " " boiler, 156 " " hard rolled brass aeroplane, 3 " " my large machine, 10, 133 " " rotating arm, 64-72 " " small machines attached to rotating arm, 159
Fabric covered screw, 40 Farman's machine, 110 Flying of kites, 25, 28, 29 Forced circulation used by me, 158 Formulæ unsupported by facts, 3 French and English measurements, 128, 129
Gulls, 20, 21 Gyroscope apparatus, 93 " Steering by means of, 92
Hawks and Eagles, 13 Hélicoptère machine, 82 Hints as to the building of flying machines, 77-91 Horizontal movement of the air, 14 Hub for flying machine, New form of, 45
Interstellar temperature, 15 Introductory, 1
Kites, 21, 22, 25, 26, 28, 29 " Behaviour of, 26 " Flying of, 25, 28, 29
Langley, Experiments of, 9, 62, 99, 109 " on the flight of birds, 11, 22 " on the power exercised by birds, 12 "La Patrie," 124 Lifting effect of aeroplanes, 5 " surface of aeroplanes, 103 Low temperature of space, 15
Major Baden Powell's demand, 125 Mistral, The, 21 Motors, Development of, 31 Motor, The Antoinette, 89 My compound engines, 142 " experiments with aeroplanes, 7 " " large machine, 10, 133 " steam engines, 155