1853. This work presents the dynamic laws and relations of man, embracing the natural philosophy of phenomena styled "spiritual manifestations." It is the result of a long and patient inquiry into those mysterious phenomena which, from the earliest ages, have been found to be associated with human beings, but which either, on the one hand, have been regarded as the superstitions of the ignorant, or, on the other, have merely received a flippant explanation, or have been used as the materials of a mystical philosophy. Partial Contents: Phenomena of the new physical agent in the human organism, New agent and its phenomena, Electrical form of agency, Phenomena showing the influence of the brain on the physical agent, On deductions from all the foregoing facts, On the action of the brain without the action of the mind, Influence of local emanations in obtaining responses, oracles and physical manifestations, Showing still further the relation of local mundane force to the nervous system.