yo NATURE AND THE CAMERA 



to eat. Choose something that he likes but is not 

 accustomed to. With insectivorous birds that are in 

 captivity, a grasshopper will sometimes attract atten- 

 tion ; while with fruit-eating birds, a bunch of grapes, 

 wild cherries, or other such delicacy will frequently 

 cause them to forget the strangeness of the situation. 

 In nearly all cases where a large image of the bird 

 is wanted, use isochromatic plates; as these render 

 the colour-values so much more correctly than the 

 ordinary plates, it will be patent to the most casual 

 observer how much more correct will be the result- 

 ing portrait of the bird. Only in cases where gray 

 and brown toned birds are to be photographed should 

 ordinary plates be used. 



Picturing birds in flight is perhaps one of the 

 most fascinating branches of the work ; there is some- 

 thing so delightful in catching a bird as it skims 

 past, and securing it for ever on the photographic 

 plate. A few years ago such a thing was impossible, 

 and we had to content ourselves with drawings of the 

 flying bird; and, as the camera has since proved, these 

 drawings were in most cases absolutely incorrect. 

 The position of the wing-feathers when in motion 

 was almost unknown until the camera showed it to 

 us. Now nearly every one has seen such excellent 

 photographs as those made by Mr. Otto von Bargen, 

 which show gulls and other birds on the wing. In 

 order to secure such photographs it is of course ne- 



