The presence of certain "mediums" was required to form the link between the worlds of the living and of the dead, and Kate Fox and her sister were the first mediums. Spiritualists do not as yet claim to know what special qualities in mediums enable spirits thus to make use of them.
Many reputed "clairvoyants" developed into mediums (q.v.).
There is very little evidence to show that mediumship arose anywhere spontaneously,' but those who sat with the Foxes were often found to become mediums themselves and then in their turn developed mediumship in others.
The mere reading of accounts of seances developed the peculiar susceptibility in some persons, while others, who became mediums ultimately, did so only after prolonged and patient waiting.
Daniel Dunglas Home, the next medium of importance who appeared in London, came over from America in 1855; and for many years almost all the chief mediums for physical phenomena known in England came from the United States.
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