This is not a work of mysticism or late-life credulity. It is a clinician’s casebook, packed with detailed observations of hysterical and hypnotized subjects who displayed capacities that defied every physiological model Lombroso had ever championed. A blindfolded girl reads with the tip of her nose. A hypnotized woman reproduces drawings transmitted to her without a word or gesture. A medium in Milan, her hands and feet bound and monitored, produces materialized hands that leave impressions in clay under locked boxes. Dynamometers register forces far beyond her normal strength. A scale records her weight dropping by ten kilograms during a levitation, as though something were being borrowed from her body to accomplish the work. Lombroso documented it all—including the medium’s intermittent fraud—with the same clinical precision he had once applied to the skulls of criminals. He did not abandon his positivism. He tried to stretch it around evidence that refused to fit.
This edition restores a lost classic of scientific heresy to readable, modern English, freeing it from the dusty obscurity of century-old Italian scholarship. For readers who want to go deeper, the volume includes a substantial critical introduction that situates Lombroso’s investigation within his larger career, traces the intellectual crisis it provoked, and examines why a book so thoroughly repudiated in its own time now reads as remarkably prescient. Whether you approach it as a document of intellectual courage, a case study in the epistemology of anomaly, or simply a fascinating glimpse into the moment when triumphant nineteenth-century materialism collided with phenomena it could not digest, *Invisible Forces* offers a spectacle no other book can match: a great scientific mind following the facts wherever they lead, even into the dark.
Add this rediscovered classic to your library and watch one of history’s most stubborn empiricists confront the evidence that broke his certainties.