4lo 



INDEX 



Flight— continued 



Gliding, 190-193 



Horizontal, 180, 224 



Long distance, 224 



Soaring, 242 



Steering, 248 



Stopping, 208, 252 



in troops, 230 



Upward, 226, 239 



Varieties of, 397 



Velocity, 268 



in wake of ship, 245 



Wind and flight [see Wind) 232 

 -248 

 Flying machines, 267 

 Foot, 164-166 

 Force exerted by bird, 259 

 Frigate bird, 225 



Gannet, S3, 107, 131, 163, 164, 



202, 225, 291 

 Geographical distribution, 377 

 Gill-arches, 279-2S4 

 Gizzard, 39, 64 

 Glottis, 78 

 Goose, 156, 15S, 197 

 Gravity, centre of, 224, 254 



Specific, 106 

 Gullet, 62, 63 

 Gulls, 49, 107, 241, 244, 3S6 



Black-headed, 160 



HEMOGLOBIN, 76 



Hallux, 166 



Hatteria lizard, 7, 16, 17 



Hawk, 66 



Heart, 68-74, 2S2-285 



of crocodile, 2S5 



of fish, 278 

 Heligoland, 348 

 Hibernation, 348 

 Hoatzin, 43, 62, 286-290 

 Homing faculty, 373 

 Homology, 30 



Hornbill, 83, 107, 109, ill, 1 14 

 Humming bird, 74, 162 



Instinct, 327 [see Table of Con- 

 tents, p. xv) 

 Iris, 124, 127, 129, 130 



Joints, ii, 22, 23, 194-196 



Kidneys, 102, 115 

 Kite, the bird a, 233 

 Knot, 160, 352 



Lacteals, 67 

 Larynx, 7S 

 Lens, 124 

 Lepidosiren, 97 

 Levers, 173, 174 

 Ligaments, 144 



Elastic, 198, 199, 213 

 Linnet, 159, 160 

 Liver, 66, 67 

 Lizard, 6-28, 37 

 Lungs, 79, BO, 93, 94, 97 

 Lymphatics, 71, 77 



Macula lutea, 125, 12S 

 Marrow, 77, 82, 105-115 

 Medulla oblongata, 103, 121 

 Membrana semilunaris, 138 

 Migrants and residents, 366 

 Migration, 339, 348-378 [see Table 

 of Contents, p. xv) 

 Offish, 352 

 Unpaired birds, 363 

 Moulting, 34, 155-160, 307, 364 

 Muscle, 141-143, 247 

 Muscles, ambiens, 169 

 Finger, 209 



Flexor carpi ulnaris, 199, 201 

 Inter-costal, 87, 90, 91, 93 

 Latissimus dorsi, 89, 90, 92, 



257 

 Pectoral, elevator, 206, 208 



Great (or depressor), 



205, 206, 211 

 Third, 204, 207 

 Pectorals, weight of, 211, 265 

 Triceps, 200, 209 

 Museums, 401 



Neck, 25 

 Nerves, 116 



Optic, 125 



Sympathetic, 116 



Vasomotor, 103, 104 

 Nest-building, 334~337 

 Nesting-places, 355, 367 



