1889. 1 A new Form of Gas Battery, 299 



Fig. 3. 



form gas chambers G l5 Gr 2 , Gr 3 , which are connected by means of 

 cork or rubber washers Q, so that the gases admitted by the pipes 

 pass through the whole series of chambers. The first and the last 

 gas chamber are formed by an additional pasteboard frame intervening 

 between the last plates and two plates of zinc Z 1? Z 2 , extending 

 beyond the battery plates, which hold the set together. The whole 



