The want of suitable ventilation in school-rooms, recitation-rooms, lecture-rooms, offices, court-rooms, conference-rooms, and vestries, where young students of law, medicine, and theology acquire their earlier practice, is something simply appalling. Of itself it would answer for men the question, why so many thousand glad, active children come to a middle life without joy,--a life whose best estate is a sort of slow, plodding endurance. The despite and hatred which most men seem to feel for God's gift of fresh air, and their resolution to breathe as little of it as possible, could only come from a long course of education, in which they have been accustomed to live without it. Let any one notice the conduct of our American people traveling in railroad cars. We will suppose that about half of them are what might be called well-educated people, who have learned in books, or otherwise, that the air breathed from the lungs is laden with impurities,--that it is noxious and poisonous; and yet, travel with these people half a day, and you would suppose from their actions that they considered the external air as a poison created expressly to injure them, and that the only course of safety lay in keeping the cars hermetically sealed, and breathing over and over the vapor from each others' lungs. If a person in despair at the intolerable foulness raises a window, what frowns from all the neighboring seats, especially from great rough-coated men, who always seem the first to be apprehensive! The request to "put down that window" is almost sure to follow a moment or two of fresh air. In vain have rows of ventilators been put in the tops of some of the cars, for conductors and passengers are both of one mind, that these ventilators are inlets of danger, and must be kept carefully closed.