The mumps, or what I beg leave to call angina maxillaris, is an epidemic disease of a very singular nature. It has appeared sometimes to be pretty general; but this has not been the case for many years in this place. It seems to be analogous to, if not the same distemper with that called the branks, by the common people in Scotland. In the general account of epidemics, in the first volume of the Medical Essays of Edinburgh, a disorder is mentioned which seems to have been a flight degree of that which is the subject of the following paper. I have had much practice in this disease, and indeed was once reduced to the utmost danger by it myself.