Organon §287
Homeopathic use of magnets
One can more surely avail oneself of the curative powers of a powerful magnet. The positive actions of its north and south poles are presented in the Materia Medica Pura. Although both poles are equally powerful, they stand in opposition to one another in the manner of their action. Doses may be moderated by the amount of time one or the other pole is applied (according to whether more of the symptoms of the north or the south pole are indicated). A plate of polished zinc can be used as an antidote for an all-too-violent action.