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 the danger of bad air, hear Langenbeck, the great German anatomist: "I am sure now of what I suspected long ago, viz., that pulmonary diseases have very little to do with intemperance, … and much less with cold weather, but are nearly exclusively (if we except tuberculous tendencies inherited from both parents, I say quite exclusively) produced by the breathing of foul air." And as Maclaren says, "The lungs themselves are strengthened by this increased activity." This outdoor work should also be steadily increased until the half-hour's listless walk at first becomes six or eight miles before dinner, and as much more before supper. From breakfast to supper one can hardly be exercising out-of-doors too much; and steadily calling on the heart and lungs in these very favorable ways, increased vigor and power are only what might have reasonably been looked for.

As the months roll on, and this steady work, directed right to the weak spots, has strengthened and toughened you; now stand say five feet from the exerciser, also increase the number of strokes until you do a thousand or even two thousand daily—head and body always being held erect, and full breathing a constant accompaniment. This making a specialty of these chest-expanding exercises, none of which are severe or violent; but which are still vigorous enough, and the abundance of healthy and active out-door life, are sure to bring good fruits in this battle where the stake is no less than one's own life. They are rational and vigorous means, aimed directly at the weak part, and, with good air, good food, cheerful friends, and ample sleep, will often work marvels; where the filling the stomach with a whole apothecary-shop of nauseous oils and other medicines has wholly failed to bring the relief sought. These exercises taken