Upon admission, January 17, he was hard of hearing on both sides, and his speech was peculiar: choked off and retarded. His gait was heavy, on a broad base. He was subject to headaches. Exercises gradually improved the speech and the walking disorder was quickly overcome. February 5 came a relapse through fright at the rolling of drums near by. Speech was completely lost, deafness set in, and the patient ran restlessly to and fro in tears. After a few hours speech returned with still some minor difficulty. From time to time came fainting spells and attacks of disorder of consciousness, with loss of orientation and the idea of being in the trench or under cover. He would ask whether it were raining through. His mood herein was at times cheerful and excited. Speech further improved from the middle of February, as well as did the other symptoms. On the King s birthday, February 25, occurred another relapse due to his hearing small guns fired: Apathetic stupor, clonic spasm, aphonia, abasia, severe deafness, poor sleep, refusal of food. The next day he was still mute, but the spasms had ceased. He lay apathetically in bed, taking a little liquid food. February 27 he was still mute, though more active, not deaf, getting up alone, walking unsteadily on a broad base, and playing cards at the table. March 2 the word _yes_ was again enunciated. March 3 he talked more freely and took a short walk. March 4 speech of a sudden came completely back on the occasion of getting excited in a quarrel among some other patients. The patient thereafter began to talk a great deal, was bright and cheerful, but still complained of a variety of nervous troubles. Speech was somewhat difficult, but he was free from any definite aphasia or paraphasia. _Re_ Shell-shock deafness, Jones Phillipson states that concussion deafness is due to three contributory factors: (_a_) cerebral concussion, (_b_) fatigue (violent oscillation of the perilymph, continued noises, strain of organ of Corti), and (_c_) temporary or permanent disorganization of the conductive apparatus. _Re_ concussion deafness, J. S. and S. Fraser found in four cases of actual explosion injury, a ruptured drumhead and hemorrhage into the fundus of the internal meatus in three cases. They did not find evidence of neuro-epithelial changes. Possibly the fundus hemorrhages, besides giving rise to deafness, may start up the tinnitus and giddiness that are sometimes found. In one case, there were changes in the delicate nerve endings of the auditory ampullae. Shell-shock: Deafness =Case 260.= (MARRIAGE, February, 1917.)