"How to Hold Circles" is a bit more of a work of psychological magic than it is strictly just a multi-lesson guide to mediumship. Indeed, while its stated purpose is teaching mediumship and clairvoyance, the methodology applied is nine parts self control and awareness to one part spiritualism itself.As such, for the student of the occult, this is a remarkably helpful little piece from the golden era of crystal balls and imported spirituality, as an excellent example of the kind of mentality then in vogue, as well as potentially of great use for those interested in the subject.