The Law of Psychic Phenomena / A working hypothesis for the systematic study of hypnotism, spiritism, mental therapeutics, etc.

The author proposes a unifying, three-part hypothesis to explain hypnotism, spiritism, mental therapeutics, genius, and insanity, arguing that psychic phenomena operate under general natural law. He distinguishes an objective and a subjective mind, describes suggestion and autosuggestion, and analyzes subjective reasoning, prodigious memory, artistic and mathematical talent, and altered states as manifestations of subjective intelligence. The work surveys experimental reports and clinical observations to classify phenomena, applies inductive reasoning to correlate them, and outlines practical and theological implications while urging that psychology adopt a more exact scientific method.