In the Law of Psychic Phenomena by author Thomas Jay Hudson, Hudson has attempted to create a classification of verified psychic phenomena, accounts of which is found in the literature current on the subject; and has tentatively formulated a working hypothesis for the systematic study of all classes of psychic phenomena. Hudson has collected a vast array of facts, thus accumulated and verified, and awaiting scientific classification and analysis, which would seem to justify at least a tentative effort to apply to them the processes of induction, to the end that the fundamental law of psychic...

I DO not expect this book to stand upon its literary merits; for if it is unsound in principle, felicity of diction cannot save it, and if sound, homeliness of expression cannot destroy it. My primary object in offering it to the public is to assist in bringing Psychology within the domain of the exact sciences. That this has never been accomplished is owing to the fact that no successful attempt has been made to formulate a working hypothesis sufficiently comprehensive to embrace all psychic phenomena.
Sincerely believing in the correctness of my hypothesis, I have not hesitated to follow...