96 SECTIOK-PI1 YSICS. 



Figure 2, showing ten cells of a rod chloride of silver batUry in 



their tray. 



kind composed of forty cells. When I connect it with a Voltameter, 

 which is a piece of apparatus for the decomposition of water and the 

 collection of the products of decomposition, you will see that there 

 is a rapid decomposition for the size of the battery, and that a 

 certain accumulation of gases will take place. The object of this 

 battery is to follow on the lines already laid down by our excellent 

 and distinguished friend, Mr. Gassiot, who was the first, I believe, 

 to construct batteries with any very large number of cells. I recollect 

 he began with a water battery, in which there was a plate of zinc, one 

 of copper, and distilled water as the electrolyte. With this he made 

 some very interesting experiments, and showed that which was 

 doubted at one time, that the voltaic spark will jump some distance 



