A shell burst behind an English lieutenant in 1914 without causing any wound but making him unconscious for an hour. During the hour the Germans passed by and stripped him of all articles of value. He came to and felt himself markedly deaf in both ears with an intense headache. There was no hemorrhage, no discharge, no tinnitus, no vertigo. Four days after the shell burst he could hear spoken words on each side at two feet, but could not hear a watch that could usually be heard from 3½ to 4 feet. With tuning fork C air and bone conduction proved much subnormal, though air conduction was better than bone conduction. With tuning fork C-5 air conduction was subnormal. Drums healthy. Improvement followed; hearing became normal eighteen days after explosion. The treatment was rest in bed with bromides early and strychnine later. Marriage states that the psychical deafness due to shell-shock is usually bilateral and absolute. It is accompanied also, as a rule, by other nervous signs and symptoms, such as aphonia, tubular vision, paralyses, and anesthesias. Milligan and Westmacott state that the deafness is due to a functional suspension of neuronic impulses. They regard the brain as in a state of physical fatigue, and the mind as in a state of strain. There is no organic lesion. The neuronic impulses which are temporarily suspended are those which run from the higher cortical cells to the periphery. Mine-explosion: Unconsciousness: Deaf-mutism. Recovery of speech after epistaxis and fever. =Case 261.= (LIÉBAULT, October, 1916.) A soldier, 24, teacher in civil life, was in a mine explosion November 27, 1914, at Vienne-le-Château. He was unconscious six weeks and remembered nothing of what had passed. They had told him that he had been blind for a month. After regaining consciousness he was a deaf-mute and for seven months he did not speak. His mutism did not bother him, as he thought he had always been mute. He had always been able to write. He could not remember what had interfered with his speech or tell whether he could think the words which he could not utter. May 22, 1915, there was considerable nasal hemorrhage, with fever. Upon this day he began to speak, at first a few words, telegram style, and with aphonia. A week later his voice returned. He was very irritable during the period of mutism and had ideas of persecution and of suicide and complained of becoming easily fatigued and exhausted. His voice, however, became completely normal again and his respiration better. On the spirometer he breathed four liters, but still got out of breath easily. His diaphragmatic respiration was still imperfect. His deafness remained at the time of report about as before, though he had now been hearing for some time a slight resonance of his own voice and could hear sounds emitted a few centimeters from his ear. At time of report there was still general fatigue with insomnia.