44 ZOOPRAXOGRAPHY 



phases is in the direction of the motion, and the disc 

 is necessarily revolved in a reverse direction. 



When the number of phases is greater than the 

 number of perforations, the phases succeed each other 

 in a direction contrary to that of the motion, and the 

 disc is revolved in the direction of the motion. 



An increased or diminished number of figures will 

 respectively result in an increased or diminished 

 apparent speed of the object. 



For further information on the subject, the reader 

 is referred to the 



ZOOPRAXISCOPE. 



