34 



PHOTOGRAPHY FOR NATURALISTS. 



of the background, and that his sudden and forcible 

 reversal roused him to such an extent as to cause him 

 to display his ears on other than the customary 



occasion of flight. 



The writer has hitherto failed to secure a 

 picture showing the natural spread of a bat's wings. 



Field Vole. 



He has attempted, unsuccessfully, to do so by causing 

 his victim to fall in daylight across the field of 

 view. However sleepy the animal might appear, he 

 found that the wings invariably formed a natural 

 parachute when a few feet of descent were accomplished. 

 The possibility of such a picture is therefore established; 

 but, as may be imagined, the difficulty of releasing the 

 shutter at the proper moment is no slight one. 



For the photography of any small mammal which 



