The Medium: That is a quick answer.

At this point attention is directed to the first of a series of
experiments with four glass tumblers, which are placed together, with
the bottoms upward, on the carpeted floor, in the centre of a vacant
space. The Medium stands directly upon these, the heels of her shoes
resting upon the rear tumblers and the soles upon the front tumblers.
The Committee co-operate with the Medium, and, in conformity with her
suggestions, all the men clasp hands and form a semi-circle in front of
the Medium, the hands of the latter being grasped by the gentlemen
nearest to her on either side.

Mr. Sellers (after a notification from the Medium to proceed): Is Mr.
Seybert still present?

No response.

The Medium: It may be a few minutes before you will hear any rapping
through these glasses.

Ten seconds elapse.

The Medium: This test is a very satisfactory one, if they do it. And
they have done it a hundred times.

Five seconds elapse.

The Medium (to Mr. Furness): The glasses are not placed over marble, are
they?