108 Hare’s New Galvanic Apparatus, Theory, &e. 
terstice wider than a quarter of an inch. Each coil is in 
ut two inches and a half, so that all may de-~ 
secend freely into eighty glass jars two inches and three 
quarters diameter insities and eight inches high, duly sta- 
tioned to receive them.* 
My apparatus being thus arranged, two small lead pipes 
were benetelly soldered to each pole, and a piece of char- 
coal about a quarter of an inch thick, and an inch and a half 
long, Yio a little at each extremity, had these severally 
inserted into the hollow ends of the pipes: The jars being 
furnished with diluted acid and the coils suddenly lowered 
into them, no vestige of the charcoal could be seen: It was 
ignited so intensely, that those portions of the pipes by 
which it had been embraced were destroyed. In order to 
avoid a useless and tiresome repetition, I will here state 
that the coils were only kept in nike acid while the action 
at the poles was at a maximum in the experiment just men- 
tioned, and in others which I am about to describe, unless 
where the decomposition produced by water is spoken of, 
or the sensation excited in the hands. I designate the ap- 
=~ with which I performed them, as the galvanic de- 
, on account of its superior power, in proportion to 
its ‘size, in causing deflagration; and as, in the form last 
adopted, it differs from the voltaic pile in the omission of 
one of the elements heretofore deemed necessary. to its 
iiadnitins 
_ Desirous of seeing the 7 of the simultaneous immer- 
sion of my series upon wat r, the pipes soldered to the poles 
were introduced into a rina containing that fluid. No ex- 
effect was perceived, until they were very near, 
when a vivid flash was observed, and happening to touch 
almost at the same time, they were found fused and incor- 
porated at the place of contact. I next serials to each 
The a brass cylinder about five-tenths of a an inch parse 
the most vivid nate in in coal. It was fiero 
re. A piece of platina of about a quater 
of an. inch diameter in connexion with one. © pole," was in- 
* See Plate. 
