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Permeability is of fundamental importance in biology and medicine. It has been and must continue to be the subject of research by those who would elaborate a physicochemical science of cell physiology. In the German edition (1929), Gellhorn studied about 1,400 references; in the French translation more than 100 more are added. The book is indeed more a collection and critical analysis of the literature than a contribution of original work, although it contains much that is original. In the translation, Régnier gives original German in Roman letters, and his own comments, which are voluminous, in italics. The order of presentation is: Methods of study, direct and indirect. Permeability of membranes. Permeability of cells, vegetable and animal. Permeability of organs. Results and theories of permeability. Final considerations. Included under this outline is work in physiology, pathology, pharmacology and some envisagement of therapeutics. As an example of physiology, one may consider
La perméabilité: En physiologie et en pathologie générale. JAMA. 1937;109(3):231. doi:10.1001/jama.1937.02780290053027