CONTENTS. 



CHAPTER I. 



Page 



VISION OF BIRDS 1 



Vision of the Eagle and the Lynx .... 1 



Experiment of Scaliger 2 



'Daring of Larks ....... 2 



'Ointment of the eyes ...... 3 



Eye-brush (membrana nictitans} .... 4 



Eye of the Golden Eagle 5 



Vision of the Osprey ....... 5 



'Fact observed by j, R. . . . . .8 



Experiments of Captain Ross and M, Schmidt . 8 

 Theories of Sir C. Bell and Dr. T. Young . . 9 



Theories of Jurine and Sir E. Home . .11 

 Circular flight of Pigeons . . . . .12 



Carrier Pigeon . . . . . .13 



Passenger Pigeon . . . . . * 14 



Singular journeys of a Dog and of an Ass. .16 

 Circular flight of carrion birds . . .17 

 Concourse of carrion birds . . , . .18 

 Membrane termed the purse and the comb . .19 



Eyes of the Mole (Talpa lucidv) . . . . . ( 20 



Size of the eyes in birds. . . . . .21 

 Vision of nocturnal birds . . , . .23 

 Birds fond of bright objects . . . . .25 



Quick vision of the Cormorant , . . .27 



CHAPTER II. 



HEARING OF BIRDS . . . . . , .29 

 Proverbial quick hearing of the Goose . * * 29 



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