
Albert Roy Davis and his cat Six Toes.
Image credit: Biomagnetics USA - History of the Albert Roy Davis Research Laboratory ...and a Glimpse into our Future
You can demonstrate some of the effects of magnetic fields for yourself. In the last twenty years some significant advances have been made in the use of magnets for healing. One of the most significant discoveries was made by Albert Davis in 1936. He found that the north and south poles of a magnet had different biological effects.
— Buryl Payne in The Body Magnetic, Edition 4, Chapter 5 (Magnetism and Life), (Santa Cruz, California: independently published, February 1990), p. 86.