In Nubia never scruple to throw yourself into the coldest river or spring you can find, in whatever degree of heat you are. The reason of the difference in Europe is, that when by violence you have raised yourself to an extraordinary degree of heat, the cold water in which you plunge yourself checks your perspiration, and shuts your pores suddenly. The medium is itself too cold, and you do not use force sufficient to bring back the perspiration, which nought but action occasioned; whereas, in these warm countries, your perspiration is natural and constant, though no action be used, only from the temperature of the medium; therefore, though your pores are shut, the moment you plunge yourself in the cold water, the simple condition of the outward air again covers you with pearls of sweat the moment you emerge; and you begin the expence of the aqueous part of your blood afresh from the new stock that you have laid in by your immersion. For this reason, if you are well, deluge yourself from head to foot, even in the house, where water is plenty, by directing a servant to throw buckets upon you at least once a-day when you are hottest; not from any imagination that the water braces you, as it is called, for your bracing will last you only a very few minutes; but these copious inundations will carry watery particles into your blood, though not equal to bathing in running streams, where the total immersion, the motion of the water, and the action of the limbs, all conspire to the benefit you are in quest of. As to cold water bracing in these climates, I am persuaded it is an idea not founded in truth. By observation it has appeared often to me, that, when heated by violent exercise, I have been much more relieved, and my strength more completely restored by the use of a tepid bath, than by an equal time passed in a cold one. Do not fatigue yourself if possible. Exercise is not either so necessary or salutary here as in Europe. Use fruits sparingly, especially if too ripe. The musa, or banana, in Arabia Felix, are always rotten-ripe when they are brought to you. Avoid all sort of fruit exposed for sale in the markets, as it has probably been gathered in the sun, and carried miles in it, and all its juices are in a state of fermentation. Lay it first upon a table covered with a coarse cloth, and throw frequently a quantity of water upon it; and, if you have an opportunity, gather it in the dew of the morning before dawn of day, for that is far better. Rice and pillaw are the best food; fowls are very bad, eggs are worse; greens are not wholesome. In Arabia the mutton is good, and, when roasted, may be eaten warm with safety; perhaps better if cold. All soups or broths are to be avoided; all game is bad.