The Mediums’ Book is about mediumship – a faculty that enables the communication between human beings and the spirits of the so-called dead.
Allan Kardec was the first to seriously study mediumship by using a scientific method. The book presents the teachings of spirits on all types of spirit manifestations, the ways of communicating with the invisible world, the different types of mediums and the development of mediumship.
Employing scientific strictness, it analyzes hoaxes and charlatanism, and proposes methods of verifying and controlling the information given by spirits.
Finally, it defends the use of reason in dealing with subjects related to spirituality.
A complete guide to the safe and charitable practice of mediumship, with Christ's moral maxims.
This book offers an eye opening journey into the mechanisms of the organic and natural human faculty of mediumship, its various types and applications and its safe practice when tied with the moral recommendations given by Jesus Christ ("give freely what you have freely received", among several others), as explained by spirit guides and mentors, with observations by the author.
Kardec, with the help of serious-minded mediums from North America and Europe (who made of use of their mediumship free of charge and for purposes of instruction and consolation), compiled this book which became a bestseller when it was first published in the 1860's-1870's. It provides a brief history of the beginnings of modern Spiritualism with the widespread phenomenon of the "dancing tables" that took over Europe in the mid 1800's and developed into a serious investigation and science into the world of spirits, their interaction with the living, the notions of reincarnation, and answers to the most basic philosophical and existential questions. These would form the body of works put forth by Kardec which gave rise to a Spiritualist philosophy with moral and scientific consequences known as Spiritism.
The book also addresses the rampant cases of fraud and charlatanism which misguided believers and distorted notions of the mediumship at the time and still do nowadays.