A companion to his first book, The Spirits' Guide, The Book on Mediums explains how to apply Allan Kardec's principles of his practical science of spiritism in

Dear friends, do not believe every spirit, but test the spirits to see if they are of God - (1Jn. 4;1). This work, the second volume of the Codification of the

The Mediums' Book sees Allan Kardec introduce and explain how human beings can communicate with the vast spiritual realm. Through this book, we learn how to mak