212 



THE ELECTRIC TELEGRAPH. 



point of a tooth of the other. The plates are put as near to 

 each other as possible without any of the teeth making 

 contact with their neighbours opposite. The two line wires 

 are attached to the plates by means of binding screws. A 



i 



fcC 







I 



modification of this lightning discharger includes both the 

 arrangements of Breguet the saw teeth and fine wire. 



113. Lightning Discharger of the Prussian and Austrian 

 Telegraph Lines. This is described in detail in Brix's 

 Journal. It is on the points principle, and is arranged for 

 being placed on the instrument board. From a bar of 

 metal, c, Fig. 115, on the left-hand side, project two points, 



