Many reputed "clairvoyants" developed into mediums (q.v.).
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.
The experiments were conducted with his own family and friends without professional mediums, and in some of them he was assisted by M.
On the 31st of March 1713, when the edition was nearly ready for publication, Newton wrote to Cotes: " I heare that Mr Bernoulli has sent a Paper of 40 pages to be published in the Acta Leipsica relating to what I have written upon the curve Lines described by Projectiles in resisting Mediums. And therein he partly makes Observations upon what I have written & partly improves it.
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.