=Management.=—The preventive measures described in connection with scarlet fever are applicable in measles. The room should be maintained at a temperature of 70° F., and should be moderately darkened. The bed should be so arranged that the face will be directed away from the light. Milk, broths, and gruels are suitable forms of nourishment. The temperature, pulse, respiration, hours of sleep, quantity of nourishment, amount of urine, and the effects of therapeutic measures should be carefully noted as in other fevers. Daily inunctions of the body with cold cream or olive oil are useful. Spraying the nose and throat with a mild antiseptic solution, and washing the eyes with boric acid solution (15 grains to the ounce of water) are usually ordered. Hot baths and hot drinks are indicated when the rash is delayed. Fever is generally controlled by sponging. Great care is necessary during convalescence to avert complications. DIPHTHERIA. Diphtheria is an acute contagious disease characterized by moderate fever of an irregular type, and of from one to two weeks’ duration; by considerable weakness and prostration; and by the formation of a grayish or whitish false membrane upon the throat, nose, larynx, and adjacent parts. The exciting cause of disease is the _bacillus of diphtheria_, which is found chiefly in secretions of the affected mucous membrane. The constitutional symptoms are due to the absorption of a toxin produced by this bacillus. Diphtheria involving the larynx is sometimes termed _true croup_ or pseudomembranous croup. This form is characterized by irregular fever, hoarseness of the voice, croupy cough, and progressive difficulty in breathing. Death frequently results from suffocation, unless tracheotomy or intubation of the larynx be performed. The chief =complications= of diphtheria are pneumonia, degeneration of the heart-muscle, inflammation of the middle ear, and paralysis the result of an inflammation of the nerves. =Preventive measures= consist in isolation of the sick, the thorough disinfection of the bedroom, bedding, clothing, and all articles used by the sick, and the administration of an immunizing dose (500 units) of antitoxin (see page 25) to those who have already come in contact with the patient or who have otherwise been exposed to the contagion. The sick-room should be well ventilated and maintained at a temperature of 70° F. The atmosphere should be made moist by slaking lime in the room or by generating steam in a kettle. In membranous laryngitis treatment in a steam-moistened tent is desirable. On account of the tendency to sudden heart failure absolute quiet and rest are to be enjoined. The diet should consist of milk, unseasoned broths, koumiss, junket, and eggs.