THE STRUCTURE AND LIFE OF BIRDS chap. 



Phases of the Stroke. l 



Instantaneous photography has in many ways 

 surprised the world. Horses no longer trot or gallop 

 as they did. Birds get their wings into the most 

 surprising positions, utterly unlike anything to be seen 



Fig. 57 (after Marey). 

 Gull flying. 



in the conventional bird of the artist. Many Gulls 

 have been photographed on the wing by Messrs. 

 Wyles, at Southport ; some Storks, the favourite bird 

 in the Fatherland, by Germans ; the American Eagle 

 and other birds, by Mr. Muybridge ; and Professor 



Fig. 5& (after Marey). 



Gull flying— 50 images per second. 



Marey has obtained images of flying Gulls, at the rate 

 of fifty per second, showing the various phases of the 

 up- and down-strokes. The Southport Gulls are 



1 Some of this has been necessarily anticipated. See 

 "Active Machinery," and "Movements of the Wing partly 

 due to the Action of the Air." 



