For eight months the man had been in action at the front, under heavy gun and rifle fire. He was a courageous man, who had never felt fear, regarding himself as used to battle and the bursting of shells. He had not been wounded. The entire situation seems to have developed after the single shell burst of April 14, 1915. LOCALIZATION OF SHELL-SHOCK SYMPTOMS: Hemiparesis and hemianalgesia on side of body exposed to explosion; contralateral irritative symptoms of face and tongue. =Case 256.= (OPPENHEIM, January, 1915.) A soldier had a shell explode to his right, October 23, 1914. He declared that the concussion launched him through the air. When he recovered consciousness three hours later, he lay in a bog and was unable to move either leg. Gradual improvement followed. The symptoms were sensations of formication in the legs, pain in the back, blurred sight, hardness of hearing, disturbance of speech, headache, vertigo, weak memory. After a fortnight weakness in right arm. He was admitted to hospital a week after the injury, unable to walk, restless, given to palpitation and attacks of anxiety. On attempts to walk, leg spasms and tachycardia. Transferred to nerve hospital, December 2. Sleep poor, uneasy with dreams. Tic on left side of face. On opening the mouth, left-sided faciolingual spasm. Paresis of right arm. At first, right-sided ankle-clonus and paresis of leg. Knee-jerks increased. Speech hesitating. Right hemianalgesia. Concentric contraction of visual fields. Tachycardia (120). In walking the right arm failed to swing normally. Attacks of vertigo, with falling. Patient got up at night and pushed against objects in his room. There was only slight improvement while under observation. He became psychically more frank and even talkative, and was moving more readily when transferred. _Re_ Oppenheim’s conception of the strongly peripheral element in traumatic neurosis, he sums up by saying that a traumatism attacking the organism at its periphery is in line to produce a neurosis without any psychic mediation whatever. The rôle of the psychic process, in Oppenheim’s view, is contributory to the fixation of neuroses. Even when there is a free interval betwixt shell burst and neurosis, still there are physical effects of trauma upon neurones. Shell-shock; unconsciousness; after improvement in symptoms (4 months) return to trenches; more symptoms after 5 days: Sensory disorders, especially on left side (the side more exposed to explosion); exaggerated reflexes on right side with slight clonus and with Babinski sign. Improvement. =Case 257.= (GERVER, 1915.)