Hare’s New Galvanic Apparatus, Theory, §c. 106 
Aur. XVIIL—A Memoir on some new Modifications if 
Galvanic Apparatus, with Observations in support of his 
New Theory of Galvanism. By R. Hare, M. D. Pro- 
fessor of Chenttiry 4 in the University of ———s 
oo a Abeta paper, communicated to the Editor, by the one and 
ceniey from the Philadelphia Medical Journal.) 
Tuap observed that the ignition produced by one or two 
galvanic pairs attained its highest i intensity, almost as soon 
as they were covered by the acid used to excite them, and 
ceased soon afterwards ; sh the action of the acid 
should have increased during ne interim. I had also re- 
marked in using an’ apparatus of three hundred pairs of 
small plains; that a»platina wire, No. 16, placed in the 
circuit, was fused in consequence of a construction which 
Sa enabled me to plunge them all nearly at the same time. It 
was therefore conceived, that the maximum of effect in 
voltaic apparatus of extensive series had never been attain- 
ed. The plates are generally arranged in distinct troughs 
rarely containing more than twenty pairs. Those of the 
great apparatus of the Royal Institution, swomtens oR te 
H. Davy,: had only ten pairs in each. There 
hundred such to be successively placed ir thelnciad) ad the 
whole connected ere the poles could act. 
the effect which arises immediately after i immersion, woah 
be lost in the troughs first arranged, before it could be pro-_ 
duced in the last; and no effort appears to have been made 
to take prateme 5 of this transient oe of power, 
either in rin any: 
of which rz bina read. Inc order tiahserye a —— 
of simultaneous: immersion. with a series suffici 
merous to test the correctness of my baiiectmsingl a - 
vanic apparatus of eighty concentric coils of copper and 
zinc, Was so suspended by a beam and levers, as that they 
might be made to descend into, or rise out of the acid in 
an instant. ‘The zinc sheets were about nine inches by six, 
the copper fourteen by six ; more: of this being ne- 
cessary, as in every coil it was made to commence within * 
the zinc, and completely to surround it without. The _ 
sheets were coiled so as not tol ie between them an in-— 
Von. III.....No. 1 
