If, for instance, a man who is suffering from gout is treated with air heated by steam, he perspires profusely, and his joints are eased. This kind of vapour-treatment is known as "Turkish Bath."
If a man who is suffering from high fever is stripped naked, and made to sleep in the open air, there is an immediate fall in the temperature, and he feels a distinct relief. And if, when he feels cold, he is wrapped in a blanket, he perspires at once, and the fever ceases. But what we generally do is just the reverse of this. Even if the patient is willing to remain in the open air, we close all the doors and windows of the room in which he lies, and cover his whole body (including the head and ears) with blankets, with the result that he is frightened, and is rendered still weaker. If the fever is the outcome of too much heat, the sort of air-treatment described above is perfectly harmless, and its effect can be instantly felt. Of course, care should be taken that the patient does not begin to shiver in the open air. If he cannot remain naked, he may well be covered with blankets.
Change of air is an effective remedy for latent fever and other diseases. The common practice of taking a change of air is only an application of the principle of air-treatment. We often change our residence in the belief that a house constantly