I have no doubt that future advances in this branch of science will develop the utility of numerous other drugs and chemicals as additions to the galvanic bath.—Before leaving this subject I must call attention to the influence which the addition to the bath of certain substances has on the conductivity of the water, resp. thus: the action of the current on the patient. I have found that when I caused salt or bicarbonate of soda to be added to the bath, the conductivity of the water became so much increased, so disproportionately greater than that of the body, as to render necessary the employment of very powerful currents in order to cause the patient to feel them. Footnotes: [Footnote 2: “Medical and Surgical Electricity.” New York. 1875. Wm. Wood & Co. pp. 431 and 432.] [Footnote 3: For some experiments concerning the cataphoric effects of the galvanic current, see an article by MUNK, entitled “Ueber die galvanische Einführung differenter Flüssigkeiten in den unversehrten lebenden Organismus,” in the Allgemeine Medicinsche Central-Zeitung, No. 16, 1875.] CHAPTER III. PHYSIOLOGICAL EFFECTS. In accordance with the plan of the present work, the remarks I shall offer under this head are by no means intended to comprise all that is known at the present day of the physiological effects of electricity in general. It was my purpose when I undertook to write these pages, to offer to the profession a book confined to one subject; not a compilation, but a volume made up almost if not wholly of original matter, chiefly, if not entirely the result of my own observations and experience. For the general physiological effects then of electricity as well as for the theories of its action, I refer those interested to the many excellent works on the subject that have appeared within the last few years. I will treat here only of the physiological effects peculiar to the electric bath.