The problem of warming and ventilating is easily solved for those who desire its solution sufficiently to make the necessary appropriations. One quarter of what is commonly spent for vanity and deceit will be ample. Most men and women, at least the unthinking, prefer fashionable show rather than health! A fearful statement, but sadly true. There is doubtless more danger from impure air than from cold. Our senses warn us quickly of the latter; the prompting of knowledge is needed to guard us against the former,—of a practical knowledge unfortunately rare. Men, women, and children are
dying daily through ignorance and indifference on this subject. There is hardly a school-house to be found in which the murder of the innocents is not continually rehearsed, hardly a church in which the spiritual elevation resulting from attendance therein is not counterbalanced by an equal physical depression, and rarely a hall or lecture-room wherein an audience can even listen to a physiological discourse on the fatal effects of impure air without experimentally knowing that they are listening to solemn truth; while as to the dwelling-houses, the homes of the dear people, it requires no bloodhound's scent to distinguish them one from another! The moment the front door is opened to me, I am assailed by the odor peculiar to the establishment. It may be tuberoses or garlic, mould or varnish, whitewash, gas, lamp-smoke, or new carpets, a definite and describable or an indefinite and indescribable fragrance, but
it is sure to be something besides pure fresh air.
Let me give you first a suggestion for summer ventilation. Did you ever shingle the south side of a barn on a calm, hot, sunny day in July, thermometer at ninety degrees in the shade? Did you ever lay your hand on a black slate or tin roof exposed to the direct rays of a midsummer sun? Have you ever, at the close of some hot, labor-spent day in August, sat out of doors until the evening air became de
liciously cool, and then climbed to your attic dormitory, there to spend a sleepless night in perspiration and despair, anathematizing the man who built and the fate which compelled you to occupy such a chamber of torment?
Now, there is no good reason why the rooms immediately under the roof of a house should be any more uncomfortable on account of heat than those of the first story. Nay, more, by the simplest application of common-sense, these upper rooms may be so coolly ventilated that the hotter the sun pours his rays upon the roof the more salubrious shall be your palace in the sky. And this I call a triumph of genius, making the seemingly destructive wrath of the elements to serve and save us.
M. Figuier tells us with just how many hundred thousand horse-power the sun, by the caloric of its beams, operates upon the surface of the earth. I cannot tell precisely how much
force is spent upon the roofs of the houses that cover so much of the good mother's bosom in certain localities, but I know that it is wonderfully great, and that rightly controlled it will make the space immediately under these roofs cool instead of hot.