Treatment consists in sending for the doctor, removing the patient to a cool place, undressing him and applying cold, especially to the head and spine, or still better, placing him in a very cold bath. The body should be rubbed constantly in the direction of the heart. Stimulants should not be given. Symptoms of heat exhaustion, on the other hand, resemble those of shock. The doctor should be summoned, and the patient should be removed to a cool and quiet place, where he should stay warmly covered in a reclining position. Stimulants should be given, hot water bags applied, and the other measures for treating shock should be employed. CONDITIONS IN WHICH THE DIGESTIVE TRACT IS AFFECTED NAUSEA AND VOMITING are frequently caused by injudicious eating, especially when a person is worried or fatigued. A doctor should be consulted if either one occurs often, or if vomiting is accompanied by pain, prostration, diarrhœa, fever, or other acute symptoms. A person who is nauseated should lie down in a cool, quiet place. Hot fomentations may be applied to the abdomen, or a mustard paste over the stomach. Soda mints or a teaspoonful of baking soda may be given dissolved in hot water, and unless diarrhœa is present a Seidlitz powder or other saline cathartic may be given. A large quantity of warm water may be given to wash out the stomach; it is more effectual if salt or mustard is added, in the proportion of one teaspoonful to a glass of water. HICCOUGH, which is usually caused by digestive disturbances, is not serious in healthy people, and can generally be stopped by holding the breath, or by drinking water. If these measures are not effectual, salt or mustard in water as already described or a teaspoonful of the syrup of ipecac, may be given to produce vomiting. If the hiccough still continues, medical advice should be obtained. DIARRHŒA is ordinarily caused by an infection, or by an offending substance in the intestines. The offending substance should be removed before attempts are made to check the diarrhœa. When a baby has diarrhœa four things should be done--all food should be withheld; boiled water should be given freely; bowel movements should be saved for the doctor to see; and unless a doctor can be found immediately, castor oil should be given, from one-half to one teaspoonful according to the age of the child. Similar treatment should be given to older children. Adults should take one tablespoonful of castor oil and drink boiled water freely, but they should take no food until the doctor comes. CONSTIPATION has been discussed on pages 193 and 52.