162 INDEX—continued. 
Flight (Aero Weekly), 14, 16, 25 
Fowl, Jungle, 73 
Friction, 14 
Gannet (see Pl. xiv), 65, 76, 85, 
94, 121, 133 
Gilson, Mr. R. C., 147 
Glaisher, Mr., 112 
Gliders (see Aeroplanes), 25, 26, 
29, 153 
Gliding, Birds, 1-22, 96, 97 
Gnat, 19 
Godwit, Eastern, 111 
Goose, 88 
Gravity, Centre of, 23, 24 
Grouse, 73, 98, 100 
Guillemot, 68 
Gulls, 47, 60 (PI. ix.), 77 
——- Play of, 128 
Soaring of, 145 
—— Progression of, without 
Wing-strokes, 130-132, 139- 
141 (Pl. xvi) 
Hawks, 33, 74, 98 
Heart, 156 
Helmholtz, 56 
Heron, 31, 32, 50, 117 
Hoatzin, 68 
Hoopoe, 92 
Hornbill, 78 
Humerus, 71 
Hutton, Captain, 110 
Jay, 91, 93 (Pl. xv) 
Kestrel, 4, 41, 146 
Kite-flying, 9 
Kites Soaring, 146 
Lancaster, C., 104 
Langley, Prof., 12, 13, 125 
Lapwing (PI. xiv), 32, 64, 66, 98 
Legal and Reichel, 24, 32 
Legs, Use of, in Balancing, 31, 
32, 60 
—— Structure of, 90 
Lift and Drift, 1-15 
Ligament, Elastic, 82 (Pl. xi) 
Lilienthal, 16 
izard, 81 
Lynes, Commander, 104, 126 
Marey, Prof., 4, 5, 19, 24, 40, 43, 
50, 144 
Marriott, Mr. W., 113 
Martin, House-, 35 
Maxim, Sir H., 12, 145 
Membranes, Wing, 85 
Metacarpals, 80 ‘ 
Migration, 109-117, 160 
Moor-hen, 75 
Moulting, 88, 89, 159 
ea Quality of, 46, 55, 72-75, 
1 
Muscles 45, 55, 70-72 
Weight of, 23 
Newton, Sir I., 3, 12 
Nuthatch, 65 
Ouzel, Water-, 100 
Owl, 102 
Pace, 103-117 
Parallelogram of Forces, 7 
Payne-Gallwey, Sir R., 104 
Peal, Mr. S. E., 142, 151 
Pettigrew, Prof., 119 
Pheasant, 53, 92 (PI. xiii.) 
Pigeon (see Pls. ii, iii, iv, v, vi, 
vill, ix, x), 19, 32, 46, 64, 
97, 103 
Homing, 105, 106, 117 
Pilcher, Mr., 29 
Plover, American Golden, 109 
Pressure, Centre of, 34 
Pterodactyle, 49 
Puffin, 48 
Pygostyle, 33 
Racehorse, The, 75 
Radius, 80, 82 
Rails, 89 
Raven, 146 
Reed-Warbler, 
(Pl. xv) 
Robertson, Mr. J. B., 75 
Rook, 129 | 
Clamorous, 92 
