THE SPIRIT DRUM.
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.
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.)
