A defence of modern spiritualism

In this compelling essay, a celebrated 19th‑century naturalist steps beyond his work on evolution to confront the enigmatic realm of modern spiritualism. He argues that morality and religion will be reshaped when scientific facts are allowed to coexist with the transcendent phenomena reported by mediums and investigators. Drawing on his own reputation and the support of fellow chemists, astronomers and physicians, he frames spiritualism as a legitimate complement rather than a contradiction to materialist science.

The book surveys a wide range of experimental observations—such as luminous materializations, voice recordings, and physical effects on instruments—citing the names of respected researchers who have examined them. It also anticipates the objections of leading skeptics, explaining why many dismiss the evidence out of ignorance rather than disproof. Through measured argument and vivid examples, the author invites listeners to reconsider the boundaries of what can be known, suggesting that a broader, more inclusive science may lie ahead.