166 ~ @ Mathiot on the Atlantic Cable. 
electrician I suppose could be found, who would question the — 
correctness of this; all will admit that the time is dependent on 
the ability of the pile to generate the electricity, and the extent 
of the inductric surface (the size of the jar). But is not this 
ave endeavored to demonstrate that submerged telegrap) 
lines differ from the land lines in requiring batteries bee 
plates very large, because the electrical condition of the cables 
the first moments of contact are such 
ductor can be ascertained only by experiment, 1t 8 (7 
means only, that the best size and number of plates can be ae " 
mined st working with the greatest speed the cable will oe” q 
n iti ; 
eable the heating effect on the portion nearer to the battery a 
be considerable, for although the measure of the heating = 
first charged, and the conductor, after the dielectric is cha oe 
resists as an ordinary conductor, it is evident that tpose ae 
will be heated by the current; yet the whole quantity at 
produced will be less than if no inductive action: took oxy 3 
Considering the whole quantity of heat generated by the | 
i 1 resistance 
greatness of the surface to 5 off that heat, it is easy F tb 
* of electricity might used — 
* While a quantity of electricity even insufficient to : “ 
fae aa sinks of vars greek tension. yet no danger of this need ye 
hended from any quantity of electricity obtamed from any easily wee 
of voltaic elements. 
