[Active properties and therapeutic effects of San Giovanni Spa mud (Portoferraio, Elba Island)].

: The authors describe the most important chemical-physical characteristics of the slime of the Terme San Giovanni in Elba Island, both with reference to the inorganic component, and especially to the organic one. The latter principally comes from the presence in the extraction basin of green algae of Caulerpa genus and of two sea plants, Zoostera marina and Posidonia oceanica. The presence of sulphur, in the organic components of slime, and of iron, in the inorganic one, provide the peloid peculiar properties which are very interesting in the treatment of dermatological diseases.