The constitution of water being unknown, and supposed to consist of only the gases, hydropathy is condemned, like mesmerism, through the ignorance and intolerance of professionals, themselves falsely educated at best. As alimentary, water is the most wholesome drink under heaven; as medicinal, far beyond comparison with extracts from metals and minerals, from which deduct the water, the remainder kills. The hydropathic perspiration cleanses the flesh from head to foot; physic, the intestines and stomach only. Water is the elixir of both body and mind; witness the persons who are teetotallers. A patient declared to the present writer, he would rather have run naked into the street, were he not bound up by the wet sheets, than endure the fog and stench from his body by the cold water perspiration. Yet doctors insist that hydropathy is not medicinal or curative, or why not adopt the practice? Water is formed by detonating the gases, oxygen and hydrogen, by which their _elements_ become combined in the form of water; which is the only formative mode pursued in the laboratory of art; whereas, in that of nature, it is variously formed: the number of elements determines the number of modes. Suppose six the number of the natural elements, then any five and the remaining one, any four and the remaining two, or any three and the other three, met and compressed within the atmosphere, the product is water. On the meeting of certain clouds, where _the gases_ could not have equal elevation, water is formed; and on walls and wainscots, under cover, in humid weather, it is formed from the electric matter on their surface and the complement of elements contributed by the atmosphere: the same walls, in the same weather, would have no water, if kept de-electrised by stoves. It is formed similarly on furs, woollens, and the spider's web, all of which are retainers of electric matter; and on the leaves of plants as _dew_, but on the side only which is covered with the like electric matter. Dew-water is neither a precipitation nor exhalation, but a formation on that where it is found. Water is formed on glass and metallic vessels, however closely covered, as long and no longer than the included water gives out electric matter through the pores of the vessel. In the air of the tropics, the dew or water running down the outside of covered and uncovered vessels, cannot be considered humidity of the air condensed by cold. In proof of the foregoing, the hitherto unexplained experiment is opportune.