Note 8 — INTUITIVE EVIDENCE OF THE EXISTENCE OF SPIRITS.

It may be expedient to state that the disk was counterpoised by a weight at the smaller end of the board. This weight was suspended from a hook at one end of a rod, which was so fastened by staples, as to have the distance of the hook from the fulcrum adjusted so as to make the weight counterpoise the disk exactly.

This experiment may be understood by looking at Plate 3. The board employed is there represented, associated with a wire-gauze cage and spring balance. Let all these be removed in the mind’s eye. Suppose the large disk represented in the Plate I to be affixed with its axle to the board, near where the hook is represented as attached to the balance. Suppose a counter-weight at the other end of the board to balance the disk, so as to keep the board level when left to itself. Now, the cord and weights being applied, as in the experiment with table, (154,) on the medium placing her hands on the small end, the results above described ensued.