But it is not from the moral standpoint that we wish to consider the subject of physical cleanliness, but from the hygienic. How few people there are who are really physically clean! The outward semblance of cleanliness too frequently poses as the real article. Even people who pride themselves on their cleanliness are frequently guilty of the unclean practice of sleeping in the underwear they have worn during the day, and would feel aggrieved if their unclean habit was called by its right name. Yet, what can be more repulsive to the truly cleanly individual than the retention, next the body, of garments saturated with the constant exhalations from the system? Those who think this a trifling matter, should turn their underwear wrong side outward (after removing it) when retiring for the night, and in the morning shake it thoroughly, when they will receive an object lesson in the form of a cloud of dried effete matter, consisting largely of particles of the epidermis, removed by abrasion, through the friction of the clothing. This, being visible, appeals to the sense of sight; but gives no evidence of the gaseous and liquid refuse matter which was deposited in the material, and has been allowed to evaporate by the removal of the clothing. Thus we may see how many so-called cleanly people fall hopelessly short of true cleanliness. If the individual keeps the surface of the body clean, by frequent ablutions, the evil is lessened; but how many people bathe the body daily? As Hamlet says: "It is a custom more honored in the breach than the observance." Among the white races of the earth, the English are the greatest devotees of the daily tub, to which custom their ruddy complexions are largely due; but Japan is preeminently in the lead in the matter of daily bathing, for it is doubtful if there could be found in the land of the "little brown people" a single individual who does not bathe the whole body daily, unless physically incapacitated. The skin is such an important excretory organ that the importance of keeping its innumerable infinitesimal outlets free from obstruction cannot be overestimated. As the structure of the skin may not be understood by the average reader, we will briefly describe this wonderful depurating organ, that the paramount importance of its functions may be properly appreciated.