r filled with
water (a) was connected by means of tubing (b) to a U-tube, or manometer
(c), filled with mercury. Upon the further side of this tube floated a
bent wire (e) inserted into a small cork. The point of this wire, again,
was so adjusted as to come into contact with the smoked surface of a
revolving drum (f), driven as before. The top of the cylinder (a) was
covered with a rubber cap (d), and this whole apparatus was inserted
under a wooden box (g) having a cloth top.

Now, if the rubber covering (d) were pressed upon, this would force some
of the water, in a, along the tube, b, and the added air-pressure would
depress the column of mercury in the manometer, causing the floating
needle to rise on the opposite side, and scratch upon the revolving
drum. Fig. 3 shows some of the tracings which were obtained in this
way--the force acting through the cloth top, g.

[Illustration: Fig 3]

The instruments thus recorded a _definite physical, intelligent force_.

It may interest my readers to know that, at the time of his death, M.
Curie,--who had been completely convinced of the reality of these
phenomena,--was busy devising an instrument which would register and
direct _psychic power_ liberated from the body of a physical medium when
in trance.

Dr. Imoda, the assistant of Professor Mosso, has also conducted a number
of experiments in the discharge of an electroscope, by means of "rays"
issuing from the medium's body. It was found that, if the medium held
her fingers at a distance of an inch or so from the knob of the
electroscope, some form of energy, apparently _radio-active_ in
character, issued from her fingers, and _gradually discharged the
electroscope_. This is the "radiation" or "emanation" issuing from the
body, which has been studied extensively by students of the occult. Dr.
Imoda concluded--as the result of his experiments--that "_the radiations
of radium, the cathode radiations of the Crookes' tube, and mediumistic
radiations are fundamentally the same_."

Some other very interesting facts have been observed by means of the
electroscope. For example, Dr. W. J. Crawford (D.Sc), in his
experiments, noted that:--

"... In seance rooms where tables are moved without physical
contact, I found that after a sitting was well started, I was
always _unable_ to charge an electroscope, even though I tried to
do so in the corner of the chamber farthest from the medium. In
order to cha