Symptoms.--The symptoms develop gradually. A severe cold in the head is the first and most characteristic symptom of the disease. There is a discharge from the nose, swollen and watery eyes, sneezing and a hoarse, harsh cough. The patient may complain of the throat being painful and examination will reveal a general congestion of the parts. There are also headache, lassitude, pains in the back, and there may be vomiting and diarrhea. Children in the early stages of measles are tired and sleepy. Koplik's Spots.--Three or four days, in rare cases somewhat longer, before the appearance of the rash there appears on the mucous membrane of the cheeks small, bluish white, or yellowish white points, the size of a small pin head. These points are surrounded with reddened areas which give the appearance of a general rash with fine white points upon it. These points resemble milk particles. They adhere firmly to the mucous membrane and when an effort is made to remove them it is found that the underlying surface is ulcerated and excoriated. The Koplik spots are not of much value to the mother other than that they may be relied upon to indicate the coming disease with which they child is affected. Physicians look for them as an aid in diagnosis before the rash would of itself indicate the disease. The rash appears on the third, fourth, or fifth day of the disease. From the day of the infection to the outbreak of the rash about thirteen days intervene. It is seen first at the roots of the hair on the forehead, behind the ears or on the neck. It may be seen first on the cheeks. The beginning rash appears as small, dark red, dull spots. At first there are only a few, but they soon become more numerous, they join together, and soon the surface looks inflamed as if entirely covered with the rash. The rash covers the entire body, including the soles and palms. In twenty-four hours it is at its height on the face. It spreads downward like a wave, first the face, then the neck and chest, then the abdomen and later the legs. By the time it invades the legs it has begun to fade on the face. It fades slowly in the order of its appearance. Its duration is about four days. The skin is swollen; it burns and itches. The eyes are swollen and red and intensely sensitive to light. There is usually a muco-pus discharge from them. The cough is invariably an annoying feature. The fever is high and reaches its highest point when the rash is at its height. As the rash fades the fever subsides. When the rash fades, the patient begins to "scale." The scales of measles are fine, like bran, never in large patches like the scales of scarlet fever. The amount of the scaling varies. It may be quite considerable or it may be so small as to be overlooked.