This is so necessary for breathing, animals cannot live long without it; and as we are continually fucking it in, it is highly incumbent upon us to live in as good an air as possible. In general it should be pure, sweet, temperate, and free from all impure exhalations. When we have liberty of chusing a place of residence, it should be in a champaign open country, on the fide of a gravelly ris-ing ground, which lies towards the south or weft, and is sheltered from the north and east winds. It should be also distant from mines and marines; where the water is soft, clear, light, and insipid. Some tender, weak constitutions, cannot bear the northerly or easterly winds, and therefore their bed-rooms should be towards the west or south.

In London, when the weather is dark, dull, and soggy, weak persons should keep at home, or go into the country, where the air is clear, and the persons about them should be sound and healthy; and the house, furniture, and cloaths, should be as clean and sweet as pos-sible. Close small rooms are always prejudicial to health, because the air, in such places, will be rendered unfit for breathing by the vapours that proceed from our bodies; and it is often a fatal error to draw the curtains close about a sick person, as well as to keep all fresh air out of the room, for it prevents the sweet refreshing influences of the air. Besides, if a person in health cannot bear to sit in such places, and is greatly annoyed with the disagreeable smell; how must they be affected who are weak and dis-ordered ?