(_d_) Parotitis, or mumps, is an inflammation of the parotid or salivary gland. The disease shows itself as a swelling between the angle of the lower jaw and the ear. Several days before the swelling and pain begin, the children feel tired, ill-humored, feverish, lose their appetite, lounge around or voluntarily take to bed. Nervous children show brain symptoms; they complain of headache, are delirious and have convulsions. After two or three days they begin to feel pain behind the jaw, and when they open the mouth, masticate, or on slight pressure, the pain becomes aggravated. The swelling over the corresponding cheek extends to the lower eyelid and back to the neck. The skin over the swelling becomes inflamed and red. In males the swelling may suddenly move from the neck to the testes, while in the female it may strike on the mammæ. The course of mumps is usually favorable, but there is a possibility of an abscess forming, and this may break directly outward, or burrow backwards and burst into the ear, perforating the ear drum, causing lifelong deafness. I have had one case in which the disease went to the brain; the little boy, a child of seven, died. The patient who has mumps must be kept warm; over the swelling apply hot poultices for three or four days, and besides wrap the entire head and neck in flannel. If the swelling is painful, and the child in robust health, a few leeches applied to the swelling will relieve the pain and have a good effect on the cause of the disease. Belladonna ointment is a valuable remedy for older children, but with babies it must be used with extreme care. The diet must be bland and light; bread and milk, or gruel, is the most appropriate. Give a little paregoric at night to soothe the restlessness, and open the bowels with the Femina laxative syrup.