EXPERIMENTS WITH THE TOPLER MACHINE. 135 



the comb L downwards into the jar D, then along the 

 switch, when closed, and its connections to (7, and up- 

 ward out of C to the plate and carriers; and, in part, 

 along the electrode P towards 72, which connects with 

 the inside of D: the glass of the jars, and the air space 

 between P and R forming barriers at which electricity 



42 Experiments with the Topler Electric Machine. 



accumulates on the side towards which the movement 

 takes place, induction producing a corresponding neg- 

 ative on the opposite side. 



D has the higher potential, as already shown, but its 

 inside charge is bound by an equal negative on its 

 outer coating; while electricity is repelled from the 



