wee 
INDEX. 
————— 
Adjutant Bird, 68, 142 
Aero Manual, 18 
Aeroplanes, 10, 12, 16, 18, 27, 
36, 54, 61 
Air, Rarefied, 112 
—— Resistance of, 2-5, 6-22, 41 
Albatross, 137-139 
Alighting, 64-66 (Pl. x), 124 
Alix, M., 82 
Angle of Incline, see Friction, 
Gliding, Stability, Tacking 
Archzopteryx, 95 
Area and Cubic Content, 19, 76 
Aston, Mr. W. G., 18 
Avanzini, Law of, 26 
Aviators, see Aeroplanes 
Backbone, 60, 62 
Beetham, Mr. Bentley, 61, 65 
Big Birds, 45, 55-58, 97, 98, 143, 
144 
Blood Corpuscles, 156 
Bones, see Clavicle, etc. 
Pneumatic, 76-78 
Bonhote, Mr. J. L., 89, 118 
Breastbone, 67-69 
Breathing, 157 
Brooke-Popham, 
146, 149 
Buller, Mr. W. L., 110 
Butterfly, 19 
Buzzard, 153 
Captain, 44, 
Camber, see Curve 
Carpals, 80 
Carpenter, Mr. F. W., 114 
Catapult (used to illustrate Glid- 
ing), 26 
Cave, Mr. C. J., 146 
Chapman, Mr. Abel, 101, 119 
—— Mr. F. M., 114 
Circulation of Blood, 155 
Clavicle, 69, 70 
Clayton, Mr. H., 105 
Cody, Mr., 61 
Condor, 52 
Coracoid, 69 
Cormorant, 66, 121 
Cubic Content and Area, 19, 76 
Cuckoos in New Zealand, 110 
Curlew (see Pl. xiii), 32, 93 
Curve of Wings, 15-18 
—— Excessive, 25, 26 Ress 
Darwin, 52 
de Lucy, M., 19 
Digestion, 154 
Duck, 31, 32, 53, 62, 68, 98, 119, 
143 
Eagle, 57, 77, 136 
Endurance, 117-119 
Equilibrium (see Stability), 23-32 
Falcon, 68 
Feathers (see Pls. xi and xii), 
46, 84-86 
Moulting of, 88, 89 
Rotation of, 82 
—— Structure of, 86, 88 
Feet, Use of, in Flight, 31, 32 
—— Structure of, 90 
—— Webbed, 60 
Flamingo, 20, 31 
Flight, Direct Advance without 
Wing-strokes, 135 (Pl. xvi), 
—— in Flocks, 101 
Sideways, without Wing- 
strokes, 139 
Styles of, 31, 96-102 
Undulating without Wing- 
strokes, 130 
Velocity of, 103-117 
—— with the Wind, 124-130 
