Miss M. C., age 20; left ear; general health not good; has had naso-pharyngeal colds for two or three weeks, accompanied by a hard cough. Nov. 11,1895, at about 11 P.M., experienced suddenly a severe earache, which continued with increasing severity till the morning of November 12, when I was consulted. I found the view of the membrana tympanum obstructed by three large bullæ situated as follows: One at the upper anterior quadrant, extending down nearly to the inferior extremity of the handle of the malleus. This was large and deeply congested, the redness passing on to the meatal wall, as it joins the drum-head.
Another was situated at the junction of the drum-head with the posterior meatal wall, and was more on the latter than the former. This was also much inflamed and large. Another blister occurred exactly at the inferior extremity of the malleus, and was smaller than