Clairaudience

Clairaudience, The Philosophy of its Expression, The Science of its Practice, How to Commune with the So-called Dead is a very short book by J. C. F. Grumbine, first published in 1911. Similar in vein to the author's other book, Clairvoyance, this has twelve lessons about the practice of clairaudience, a psychic ability or paranormal phenomenon characterised by the ability to hear sounds or voices that are not present in the physical world, or that are beyond the range of normal perception.

The book explains what it is, how it works, and methods for doing it. It also contains experiments for you to try out at the end of each lesson.