67. We have seen that a table may move, raise itself up, and strike on the floor,
under the influence of one or more mediums. The first evidence of intelligence that
was remarked, in connection with these movements, was the fact that they were
obedient to the command of the operators: thus, without changing its place, a table
would raise, alternately, one or other of its legs, as required, or would strike the floor
with it a determinate number of times, in answer to a question. At other times, the
table, without being touched by any of the persons present, would move about the room
of itself; turning to the right or the left, backwards or forwards, and executing various
other movements, at their order.