594 



WINTER'S ELECTRICAL MACHINE. 



As the plate is turned, negative electricity is developed 

 on the rubbers and led to the negative conductor, while 

 positive electricity is formed on the glass and is 

 collected by the points, which transfer it to the prime 



FIG. 315 (an. proj., % real size). 



conductor. This is, however, not a complete account 

 of what happens ; in reality the conductor becomes 



