Yes, between 1872 and 1898 it was again discovered that inorganic matter essential to health comprised 12 mineral tissue salts: Calc Fluor, Calc Phos, Calc Sulph, Ferr Phos, Kali Mur, Kali Phos, Kali Sulph, Mag Phos, Nat Mur, Nat Phos, Nat Sulph and Silica. A deficiency in any of these led to weakened cell structure and ill health. When a deficiency is corrected, the cells again functioned normally and health was restored. Since then many works have been created about Cell Salts along with their primary use in hospitals in Germany. Below you will find the 3 most useful books on the subject, since they are rather short we advise you to familiarize yourself with their contents especially in relation to diagnosing yourself and others.
Nature's 12 Magical Healers by Lionel Rolfe and Nigey Lennon
Biochemic Handbook by Dr. W. H. Schuessler
Biochemical Cell Salt Formulas by Unknown Author