The Abbé Sanctorius, a Florentine, might be said to have spent twenty years of his life in a balance determining the amount of matters thrown off by the pores of the skin. To ascertain this, he first cleaned and then placed small glasses, some not longer than thimbles, on various parts of the human frame, when the result proved that every man ought to pass off from his person, daily, from six to seven pounds. Two and a half pounds are supposed to be released by the ordinary modes of evacuation, and the remainder by the pores of the skin. Now, if this exhalation is impeded, and the necessary amount not eliminated (which must happen if the skin has lost that energy, which exercise of the body and cold ablutions can alone support), what becomes of the superfluous juices thus retained in the system? The answer is easy; they circulate through the internal organs and become the source of fevers, inflammations, dropsy, and all sorts of diseases. Medical men see these effects, but do not suppose them to have resulted from suppressed perspiration. Instead of attacking the skin, they assault the stomach and bowels, weaken the digestive organs, and by that means create disease; whilst water, on the contrary, is a remedy, possessing at once dissolving and strengthening properties, which would seem to neutralise each other, but that we have daily evidence to the contrary. Herein lies the great secret of hydropathy: by its modes of application, morbid humours are drawn to the surface and eliminated, the body is cooled, and the skin put into a state to perform its indispensable duty. In internal inflammations, the morbid heat from the internal skin or mucous membrane is drawn off by the application of cold and irritation to the surface, and the disease subdued without charging the stomach with anything but pure spring water, which in contradistinction to drugs, produces the most salubrious effects. The following extract shows that the skin is the great drain through which matters injurious to the system, and superfluous heat are drawn off and accounts for hydropathy being so universal a remedy. _A Practical Treatise on Healthy Skin, by_ ERASMUS WILSON, _1 Vol. 1845_.--_Extract._ "The structure of the skin and the diseases to which it is liable, have latterly received from many of the medical profession considerable attention. The skin is that soft and pliant membrane which invests the whole of the external surface of the body, as also the interior which is called mucous membrane.