William
Crookes. One was that there is psychic force. He demonstrated its
existence by levitation. He showed next, that the force is directed by
intelligence. By various clever experiments he obtained most conclusive
evidence of that fact. He then demonstrated that the intelligence
directing the force is not that of living people. Crookes also went
exhaustively into the subject of materialization and here, again, he was
remarkably successful. He was the first scientist to photograph the
materialized human form and engage in direct conversation with the
person who thus returned from the mysterious life beyond. This evidence
from the camera must be regarded as particularly interesting. It was
received with much amazement at the time, but that was before we had
revised our erroneous ideas about the nature of matter and before the
day of liquid air. Materialization is no longer a startling idea, for
that is precisely what liquid air is--a condensation of invisible matter
to the point where it becomes tangible and can be weighed, measured,
seen and otherwise known to the physical senses.

All these things Sir William Crookes did upon his own premises and under
the most rigid scientific conditions. All the methods and mechanism
known to modern science were employed and he finally announced his
complete satisfaction and acceptance of the genuineness of the phenomena
observed.

As Sir William Crookes was the earliest, Sir Oliver Lodge is the latest
of the famous scientists who have taken up the investigation of the
continuity of consciousness. In a lecture upon the subject, before the
Society for the Advancement of Science, he declared not only that the
subject of life after physical death was one which science might
legitimately and profitably investigate but that the existence of an
invisible realm had been established. He declared the continent of an
invisible world had been discovered, and added, "already a band of
daring investigators have landed on its treacherous but promising
shores."

Different scientists make a specialty of certain kinds of psychic
investigation and while Crookes made a detailed and careful study of
materialization Lodge has given equally painstaking efforts to
investigations by the use of that class of sensitives known as
"mediums." A medium is not necessarily a clairvoyant, and usually is
not clairvoyant. A person in whose body the etheric matter easily
separates from the physical matter is a me