The perspiration is not pure, clean water; it contains many impurities which the lungs, kidneys, and other organs have not cast out from the body. It is the work of the skin to help carry off these impurities, and it does this by means of sweat glands and pores. If the perspiration dries on the skin, the impurities remain; they stop up the pores and make the body unhealthy. It is to prevent all this that we bathe often. Bathing keeps the pores of the skin open and the skin itself in a healthy condition. We use soap because the skin secretes oil as well as perspiration. This oil is to keep it soft and smooth, but it is needful that the excess of it should be washed off with soap, in order that the oil glands may not become clogged. We should be very careful not to become chilled when in a perspiration. We should not plunge into cold water at this time. Neglect of this rule often causes bowel trouble, and is a great cause of the catarrh and bronchitis so common among the Filipino people. To keep it perfectly clean, the body should be washed with soap once a day. Just before noon is the best time to bathe, or else about four o’clock in the afternoon. One should never bathe right after eating. If one takes a sponge bath with water alone, immediately on rising, one feels better all day, but, in this climate, the bath with soap is needed as well. Babies and very little children should be bathed with soap and water without being plunged into the bath. They are delicate, and unable to withstand the chill that might result. Chills are very dangerous, and a person should be careful in the rainy season not to get drenched. A person who has any kind of skin trouble should be very careful not to give it to any one else. He owes it to all others to take pains about this. If he does not, he is not a good citizen. He should be careful not to use the towels that any one else is likely to use, and his soiled clothing, when taken off, should be disinfected before being sent to the laundry.