In the field of balneology and medical climatology (BKDER and climate therapy) by Professor Dr. med. H. Vogt and Dr. med. W. Amelung, Bad Pyrmont Königstein (Taunus), with 29 illustrations and 40 tables, second edition, Springer-Verlag Berlin Heidelberg GmbH 1952. All rights reserved, especially the right of translation into foreign languages. Copyright 1945 and 1952 by Springer-Verlag Berlin Heidelberg. Originally published by Springer-Verlag Berlin, Göttingen, and Heidelberg 1952. ISBN 978-3-662-01500-1, ISBN 978-3-662-01499-8 (eBook). Preface to the second edition. The last decades have seen us in the fight against severe infectious diseases through sulfonamides, through antibiotics, particularly penicillin, in the treatment of life-threatening deficiencies through insulin, through the liver.