Psychical Physics: A Scientific Analysis of Dowsing Radiesthesia and Kindred Divining Phenomena

acid action active alternating current animals atmosphere axis bacteria Bibl blood body causes cell changes chemical colloidal composed concentration conductor contraction created crystals curve decreases direct current direction discussed disturbance divining phenomena divining rod dowser dowsing zone effect electric charges electric field electric potentials electro-magnetic fields electrodes electrostatic energy excitation experiments external factors fibres fluid frequency galvanometer geophysical GURWITSCH heat Hertzian waves horizontal hydrogen hypnotic important increase indicated influence insulated intensity ionization ions layer light lines of force living organisms MABY magnetic field magnetometer measured membrane metal method mice micellae molecules movements muscle muscular negative nerve observed occur pendulum phenomenon photographic plate physical placed plants positive potential differences potential gradient processes proteins protoplasm radiation radiesthesia rays resistance result ring rotation sensitivity skin potentials soil solution stimulation structure substances surface tangent galvanometer temperature tissue trial person variations volatile waves zinc