Davy's Voltaic Apparatus
Humphy Davy's "Voltaic apparatus,
being one of the 200 which compose the new Voltaic battery of the
Royal Institution. For the construction of this battery, and of
other instruments applicable to new researches, a fund of upwards
of 1000l. has been raised by subscription from the members
of the Royal Institution. As yet the whole combination has not
been put into action; but reasoning from the effects of that part
of it which has been used, some important phenomena may be
expected from so great an accumulation of electrical power."
From Humphry Davy, Collected Works, vol. V, plate 4.