Stage hypnotism : a text book of occult entertainments

This manual explains hypnotism as a performance art and entertainment practice, focusing on methods for demonstrating altered states in public settings. Historically, it reflects the period when hypnosis was linked to both science and spectacle, and readers will find practical guidance, routines, and discussions of presentation.

The name Leonidas is too ambiguous to identify securely, as several historical figures and authors bear it. Without additional context, I can only note that it may refer to an author associated with religious, philosophical, or esoteric traditions, but I cannot state this with confidence.