Why The Cabinet Is Necessary
Just what is the technical reason for this necessity is a source of
argument and dispute among the different authorities on the subject,
and it may be said that the matter is not as yet definitely settled. But
whatever may be such technical explanation, the fact remains that the
seclusion of the medium has been found almost absolutely necessary for
the production of the phenomena of spirit materialization. The few
exceptions noted in the history of modern spiritualism only go to
establish the general rule. For the purpose of a general study of the
subject, it may be accepted as a general fact that the production of
spirit materialization has as one of its necessary conditions the
presence and use of a dark cabinet in which the medium is secluded from
the circle or assemblage of persons attending the seance.