A good supply of _pure air_ is intimately connected with bodily vigour. There are, in every country, whole districts, of larger or smaller extent, in which the air is either permanently or periodically noxious; its bad qualities arising generally from the miasma of fens, or the mud banks and mud deposits of rivers. In all our towns, large or small, there are to be found narrow streets, dark passages, small courts, and back yards, where the atmosphere is always loaded with impurities, in consequence of imperfect drainage, the accumulation of filth, and the position of the buildings. In such places, the inhabitants are, for the most part, a feeble and sickly race. Even when healthy, it is absolutely certain that the respiratory organs should not always breathe the same atmosphere. The unwholesome rooms in which children are penned up, the close apartments where many women are doomed to labour, and the smoke, chimneys, and long rows of houses that hem in the path of others, are producing sad havoc among the softer sex. If you would have health, strength, and longevity, you must now and then refresh your lungs, by taking a stroll on a common, a walk by the sea-side, or spending a day amid the ranges of the great hills with their wild peaks and morning mists. The breathing of fresh air is, we maintain, an essential part of physical culture. _Cleanliness_ has a most important and salutary influence on your material nature. In the skin of a person of average size there are tubes connected with the pores, measuring, if put end to end, twenty-eight miles. These ought always to be kept open. Checked perspiration is direct injury to the membranes of the air passages, and frequently to the alimentary canal. It is therefore necessary to remove from the skin all refuse matter from within or without. This can only be done by washing from head to foot every morning and night. It is safe, and for many reasons most beneficial, to use cold water. The flesh brush is of great service in stimulating the skin to action, opening and cleaning out the pores, promoting a copious circulation of blood, and producing a healthful and exhilarating glow; the strength of which sufficiently attests the advantages derived. Soap is useful, and the common and coarse kinds are better than most of those sold by perfumers. Next to cleanliness in your persons, is cleanliness in your dwellings. Every house ought to undergo an annual, or rather half-yearly visitation of all its cellars, its scullery, washhouse, garrets, loft, cupboards, closets, and all dark places and corners, for the removal of dirt, or anything in its wrong place. As nearly as possible the house ought to be turned “out of windows.”