X CONTENTS. 



CHAPTER XXL WALKING OF BIRDS. 



Page 



Motions of Insects 256 



Footless Birds 257 



Feet of the Swift ib. 



Feet of Swallows 258 



Walk of the Dipper, the Coot, the Land-rail, and other Birds 259 

 Running of the Ostrich . . ... . . . 260 



Tame Ostriches at Podor 262 



Fleetness of the Bustard 263 



The Flamingo and the Stilt 264 



Climbing Birds 266 



White's Remarks on the Walk of Birds . . . . ib. 

 Walk of the Chinese Jacana ib. 



CHAPTER XXII FLIGHT OF BIRDS. 



Flying similar to Swimming 268 



Swimming-bladder of Fishes ib. 



Air-cells of Birds discovered by Harvey .... 270 



Air-bones 271 



Remarks of Sir Charles Bell 273 



Wings and Tail as Organs of Flight 276 



CHAPTER XXIIL MIGRATION OF BIRDS. 



Conjectures respecting the Appearance and Disappearance 



of Birds 279 



Account of Swallows found on the Banks of the Rhine 280 

 White's Investigation as to the Appearance and Disappear 



281 

 ib. 

 282 



285 

 286 

 287 

 288 

 ib. 

 290 

 291 

 293 



ance of Swallows 



Opinion of Mr. Bree on the same Subject 

 Swallows kept in Winter . 

 Submersion of Swallows believed in by Linnaeus, Etmuller 



Cuvier, and others 



Anatomical Argument against Submersion 

 Migration to the Moon ...... 



Facfs proving the Migration of Birds to other Countries 

 Catesby's Observations on the Migration of Birds 



Migration of the Ricebird 



Migration of the American Passenger Pigeon 

 Migration of the Peterel and Bluebird 



Migration of the Gannet 294 



Migration of the Stork 295 



Migration of the Quail 296 



Opinions as to the Causes of Migration . . . . ib. 



