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 (PI. x), 124 

 Alix, M., 82 

 Angle of Incline, see Friction, 



Gliding, Stability, Tacking 

 Archaeopteryx, 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, Captain, 54, 



146, 149 

 Buller,Mr. W. L., 110 

 Butterfly, 19 

 Buzzard, 153 



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 PI. xiii), 32, 93 



Curve of Wings, 15-18 



Excessive, 25, 26 



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 Pis. 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 (PI. 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 



