112 PHOTOGRAPHY FOR BIRD-LOVERS. 



by a mere blur, and also, as indicative of the 

 impossibility of formulating a definite speed-table , 

 we may say that in a picture of a baby Peewit 

 running close past the camera, and taken at 

 1 /800th of a second, the legs were so moved as 

 hardly to be represented at all ! 



