Chapter 38

From the Architect.

WHEN THE DOCTORS DIFFER.

DEAR JOHN: Your economical reasons for using shingles would justify cheap jewelry and rag carpets. Try to be consistent. I should object to slate on a log-barn or shingles on a stone-house. I hope you furnished your honest carpenter with a stout jack-knife, and required him not only to lay the shingles right side up, but to lay the upper ends close together, leaving them apart at the butt. Gutters are troublesome truly, but often indispensable; there is no resource but to have them thoroughly made. Poor ones are worse than none. Those that hang independently of the cornice are safest for cheaper buildings, but should be treated as an essential feature; that is, you should not complete the cornice without a gutter and afterwards disfigure it by a sloping spout having no apparent kinship to the rest of the finish.

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 deliciously 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.

And this is the way to cause the heat of a burning sun to cool the attic chamber: Make the space between the rafters on the sunny sides of your building as smooth and unobstructed as possible. Arrange openings into the outer air at the lower end of each, simple or complex, according to your taste and ability. Provide also means for closing the same in cold weather. Be sure that these spaces, or flues, are enclosed either by lath and plaster, or by smooth boards, quite to the highest part of the roof, whether your rooms are finished to the top or not,--and provided with an abundant outlet at the top. This may also be as simple as the dorsal breathing-holes of a tobacco barn, gorgeously imposing as an Oriental pinnacle, or it may be a part of the chimney; only let it be at the very summit, ample, and so arranged that an adverse wind shall not prevent the egress of the rising currents of air. Mind this, too; it is by no means the same thing to let these flues open into a loft over the attic rooms, with windows in gables or other outlet.

Now, do you not see that as soon as the sun has warmed the flues, there will be a stiff breeze blowing, not over the roof, but really between the roof and the house, and the hotter the sun the stiffer the breeze; in the words of one who has tried it,--"a perfect hurricane." That is, the lath and plaster, or sheathing, which forms the inner roof, is shaded by a canopy of slate, shingles, or tin, and fanned by a constant breeze as cool at least as the outer air. But we can do vastly better than that. Instead of opening the lower ends of these flues to the outer air, they may be extended wherever the needs of the house require, or its construction will allow.

Let me remind you, under the head of general principles, that there is no such thing as "suction." Of course, you know it when you stop to think, but bear it in mind, and wherever the motive-power seems to be applied on which you rely to lift the column of air, remember that if raised at all it must be raised from the bottom. Maybe you will discover room for a moral here.

This summer ventilation is simple enough, and relates rather to comfort than to health. The great question in building, for New England and similar climates, is, indeed, how to keep our houses warm, and, without great expenditure of fuel, have a constant change of air. As you suggest, we have learned that wood costs eight or ten dollars a cord instead of the mere labor of cutting and hauling; hence we have shut the mouths of the old-time fireplaces, mouths that it would cost a fortune to feed. We find the value of building-timber increasing every year; so we make thinner walls, lined outside and inside with paper, and have cold houses, no fresh air, anthracite coal, and disease. Our grandfathers carried foot-stoves to church, where they sat and shivered, sometimes with the cold, sometimes at the doctrines. We have warm air and stale. Let us hope our children will have warmth and freshness for body and soul. They, in their homes, had big fireplaces, loose doors, rattling windows, cracks in the walls, and as they lay in bed looked at the stars through the chinks in the roof, or felt the snow blow on their cheeks which were ruddy with health and vigor. We have cylinder stoves, double windows, tight walls plastered and papered, and pale faces.

Yet we build and furnish more wisely than our ancestors. They ventilated because they couldn't help it, couldn't afford to build as we do, and could afford to burn an acre of woodland every year.

It is no light task you have set me preliminary to an honorable discharge. Next to theology and government finance there is no subject on which the doctors differ and dogmatize as in this matter of warming and ventilating, most of them preferring that the universe should suffocate rather than their pet theories and furnaces be found wanting. (I'm not speaking of the theologians.)

Let me restate a few general principles, simple and obvious, yet so important that we must not risk forgetting them. Air runs away with heat fast enough if allowed to move. Confined it is a more effectual barrier than granite walls and plates of steel. Hence the spaces in the wall should not extend its whole height unless for local ventilation. Cut them off surely at each floor, and as much oftener as you please; also make the floors tight and warm. Deafen with mortar if you can afford it, and do not allow the open spaces between the floor-timbers to extend unbroken through the house, or fail to close them between the rafters when the ceiling of the highest story is above the plates. If you wish to warm the entire house, it will be good economy to lath and plaster along the under side of the rafters quite to the ridgepole. Finally put on your double windows, and you are ready for winter quarters.

In theory, the house being once warmed, the temperature within should scarcely change, even if the fire goes out. Practically, the walls cannot hold this subtile caloric, however scientifically they are padded. There will be crevices, too, though the prince of joiners builds your house, through which the warm air will escape. But replenishing this inevitable loss would be a small matter, if the breath of life were a needless luxury. Unless, however, we are willing to suck poison into our veins with every breath we draw, slow but sure,--poison expired from our lungs and emanating from our bodies, poisonous gases liberated by the combustion of fuel, poison dust and decay from the waste of inorganic material,--we must have a never-ceasing supply of fresh air around us everywhere and always. Now this incoming fluid, cold as ice, eats fuel like a hungry giant, yet we must receive it with open arms, and, as soon as fairly warmed, send it off through the ventilating flue, bearing whatever noxious elements may chance to be afloat, and, of course, much of the warmth we love and buy so dearly. We have then to supply these three sources of loss. Obviously for economy the two former must be prevented to the utmost, the latter rigidly controlled.

Thus far, except the old fogies who don't believe in ventilation, we can all travel together harmoniously. Now our way divides, the doctors begin to differ, and the patients begin to die.

The first fork is at the two modes of warming, direct and indirect. The former includes stoves of all sorts,--sheet or cast iron, porcelain, soapstone, brick or pottery, box or cylinder, for wood or coal, air-tight, Franklin, "cannon," or base-burner, parlor cook or kitchen cook, charcoal basin, warming-pan or foot-stove,--anything in which you can build a fire. It includes open grates and fireplaces, ancient or modern, large or small; it includes steam-pipes, hot-water pipes, and stove-pipes; and last, but not least, steam-radiators, than which it has never entered into the heart of man to conceive anything more surprising and unaccountable,--flat, pin-cushiony things, big as a bedquilt, dangerous-looking hedgehoggy affairs, some huge and bungling, others frail and leaky, but radiators still. In brief, the heating apparatus, whatever it may be, stands in the room to be warmed.

By the indirect mode it is enclosed in a chamber more or less remote, commonly called a furnace, and made of brick, sheet-iron, or wood lined with tin. Into this chamber cold air is admitted from some source, and escapes by its own levity, usually through tin pipes, to the rooms where the heat is needed. Sometimes it is driven out by mechanical means.

The advocates of the latter indirect mode claim for it many advantages. It is apparently clean. There are no ashes to be taken up, no hearths to sweep, no andirons to polish, no stoves to black. One fire will warm the entire house if well arranged, and, for a trump card, there may be a supply of fresh air straight from the north pole, but agreeably warmed, constantly entering the room.

The objections are less numerous but more weighty. The liability to imperfect construction and careless management often makes a furnace, especially a cast-iron one, a savor of death unto death rather than of health and comfort; also, when we are warmed by air thrown into a room at a high temperature, and dry at that, a greater degree of heat is necessary for comfort than if our bodies and clothing absorb heat from a radiating surface. The furnace, in short, compels us to breathe an atmosphere highly rarefied. We have the most careful and competent authority for believing this to be gravely injurious.

Direct radiation from stoves, or other heating apparatus, except open fireplaces, is, moreover, economical of fuel, but, on the other hand, unless abundant ventilation is provided, the atmosphere in rooms thus warmed soon becomes unfit for respiration.

Now you may stop and think. Next time you shall have the conclusion of the whole matter.