G. Mathiot on the Atlantic Cable. 161 
foot of surface, and immersed it in a mixture of one part acid in 
five of water, and found that one pound of zine was dissolved in 
fifteen minutes; this then was the measure of the maximum 
amount of electricity a battery of such size could generate in 
fifteen minutes; but the whole amount a practical construction 
of plates of such size could generate, would not be the tenth of 
that amount, and it is easily foreseen that whatever the amount 
might be, a cable of such length and favorable arrangements for 
this: it merely determining the tension to which the oe 
be nearly obtained by using a sufficient reservoir to collect the 
electricity evolved from convenient sized plates and thus work- 
ing the cable by means of an immense den 
called wave time). To merely enlarge the battery plates some- 
what above eo present dixesasiolls would doubtless obviate the 
One third, and its effective power in charging the cable would 
be some thousand times gre than an arrangement of an 
intensity series of small pairs. In short, it 3s a tea that 
by such an immense en arrangement and a su 
