Have two electric magnets fastened to the side within a drum. Let the
wires run up the cord or strap of suspension of the drum, so as to be in
contact, when hung by a hook or silken cord in the ceiling, with the
wires of a battery behind a partition or under the floor. One magnet is
to imitate the sound of the drumstick making the taps, whilst the other
executes the roll or accompaniment.
[Illustration: Fig. 115.]
When the drum is hung upon a figure, the arms of the latter are worked
by strings, and the wires from the battery are led up through the figure
from the table on which it is placed. (For the construction of such
tables, see _The Secret Out_ and _The Magician’s Own Book_.)
[Illustration]