You are sure you have no money to spare to buy valves, and zinc tubes and plates, or to pay to workmen for making holes in your walls, and in your doors and windows. I admit that properly these trifling things should be done at the expense of the landlord to whom the house belongs. It should be as much his duty to make a house fit to live in, so far as due ventilation is concerned, as it is to keep it dry by covering it with a roof of tiles or slate. As landlords, however, are commonly themselves ignorant about these matters, you must learn to look to the affair for yourself. You will be the sufferer if the right thing be not done, therefore it is alike your interest and your duty to see that it is done.
Suppose then that you have a hard landlord who will do nothing for you, and that you are so poor you can not spare a shilling or two for the purchase of metal tubes or plates. Then I will tell you what I would do, if I were in your shoes. I would borrow a large gimlet of the carpenter, and I would bore a row of holes through the upper part of the window frame in my bedroom, just above the glass, sloping them downwards a little, so that the rain may not be able to run in; next I would never quite shut the door of the chamber, and I would bore other holes through the frames of the windows down stairs, to act as channels of inlet. A few rough pegs of wood would serve to close some of the holes, if at any time too much air entered the room in consequence of a strong wind blowing outside. This is what I would do, rather than I would submit to be poisoned at night because I was poor.
A single round hole, a little more than half an inch across, would allow as much air to pass through it, as would be sufficient to supply the breathing of one person, provided the air were driven along by the movements of a fan, or by other mechanical contrivance, with the force of a very gentle breeze. Generally, however, it does not move so fast as this through rooms, when only caused to do so by the greater pressure of external colder air. It is, therefore, better that the ventilating openings, both for inlet and departure, should altogether make up much more than a hole half an inch across.
It is not possible to have too much fresh air in a room, provided only an uncomfortable and chilling draught is not allowed to blow upon the body of the inhabitant. You may easily prevent any discomfort or mischief from draught, even where a great abundance of air is admitted, by hanging a curtain to catch it and turn it aside. You will find, however, that there is very little chance of any troublesome draught when no fire is burning in the room, to make the air rush in with increased power, for it is fires, as you will remember, which cause quick and strong currents.
The warmer and stiller the external air is, the more difficult it becomes to secure free ventilation through the inside of rooms. In the calm hot nights of summer, the windows of sleeping rooms should on this account be left partly open all night long. It is better to breathe air moistened with night dew than it is to breathe air laden with poison vapors.
But if it be important when people are well that they shall have an abundance of fresh air moving through their dwellings, it is of far greater consequence that there shall be a thorough ventilation kept up in rooms where there is sickness. In all kinds of fevers the blood is overloaded with poison vapors, and these can not get out of the body unless they are blown away by pure air. The sick person can not be freed from the poison vapors that are clogging up his vital organs until fresh air is supplied abundantly. Do you remember what it was that first made you better, when you had the fever last year? Can you not recall to mind how all the doors and windows of your room were kept constantly open, and how angry I was whenever I came to your chamber and found them fast closed! Have you forgotten how delicious the fresh air felt to your parched and poisoned frame, and what luxury there was in the clean linen when supplied to your body and to the bed, and in the cold water when it was sponged over your skin?
If ever you are called upon to attend a neighbor or a relation who has to suffer from infectious fever, as you then did, be sure you furnish to that sick person the same comfort and alleviation which were provided for yourself.
Let this be your plan for nursing the sick: Open wide the doors and windows of your chamber. Keep the body of the patient and the room very clean. Change the linen both of the person and the bed very often. Allow only the very simplest kinds of food and drink to be given, and that in small quantities at a time. Prevent all noise and confusion around the bed. There are very few persons indeed who will not recover speedily from attacks of even the worst kinds of fever, if this simple and prudent plan of treatment is steadily pursued.
The poison-vapors of fever and other infectious diseases are very deadly when in their greatest strength, but remain so for a very short time when left to the influences and operations of nature. They can not bear the presence of fresh air. If they are mixed with a great abundance of it as they come out of the mouths of sick people, they directly cease to be dangerous poisons. All that is necessary to prevent infectious fevers from being communicated from person to person, by means of the breath, is to take care that fresh air is continually passing through the sick room. Attendants and visitors may remain with perfect safety in rooms where even the worst kinds of fever are prevailing, if they keep all the doors and windows of the chamber open, and are careful not to catch the breath of the patients until it has passed through some two yards of space, where there is perfectly pure air.
Such, then, is the “worth of fresh air.” It keeps the body healthy and strong. It blows away and destroys the invisible and dangerous poisons which are steamed forth from putrid and decaying matters, and which are to the delicate organs of the living frame much worse than dust and dirt are to clock-work. In disease it is nature’s chief remedy; the best medicine of the best Physician, furnished gratis, because he is full of bounty, as well as of great skill. Never let it any longer be a reproach to you, that you ungraciously turn away such a precious gift and priceless boon from your doors. Rather open wide your windows, as well as your doors, and welcome it with all your heart. Go to the bee, consider its ways, and be wise!