_Re_ the so-called Ganser symptom, Hesnard has dealt especially with the value of what he calls the symptom of “absurd answers,” finding the differential diagnosis between dementia praecox and simulation particularly difficult. Hesnard states that incoherence is very hard to simulate. The answers of the Ganser patient are not always incorrect, and not always absurd. The patient strikes one as intact except for the absurd answers; intimidation and other external conditions affect the symptom greatly. Drugs are refused by the Ganser patient. “Hysteria”--actually dementia praecox. =Case 156.= (HOVEN, HENRI, 1917.) A shell burst about twenty-five meters away from a soldier, 21, but he continued in the military service thereafter for one month, having only one symptom, a trembling of the arm. This persisting, he was evacuated to Calais, then to Dury to the hospital for the insane where he stayed six months. He was transferred from Dury to the Belgian Hospital for the Insane at Chateaugiron on August 20, 1915. He remembered nothing of his stay at Dury, Calais, or of anything that happened after the shell-shock. He had no complaint and wanted to go back to the front. He was well oriented for time and space and had no disorders of association or perception. Besides the persistent, retrograde amnesia, he showed certain neurological disorders, occasional slight vertigo, a generalized tremor especially affecting the arms but disappearing almost completely at rest, lively tendon reflexes, intense dermographia and cardiac erethism. Diagnosis was made of acute, convulsional psychosis with agitation, convalescent phase. During March he was quiet and worked about the hospital. In April the patient had a number of seizures of an hysterical nature. In June it was possible to evacuate him to full convalescence. He went back to the front and stayed there, but shortly developed catatonic signs with visual hallucinations and delusions of persecution of a non-systematized nature, such as poisoning, being magnetized, etc. He was at this time poorly oriented for time, assumed bizarre and theatrical attitudes, showed Ganser’s symptom, was oversuggestible and agitated and sleepless. Diagnosis of dementia praecox was now clear. Hoven remarks that this case is important in that it suggests that a diagnosis of hysteria may easily be mistaken. Influence of war experience on the content of hallucinations and delusions. =Case 157.= (GERVER, 1915.) In one of the divisional field hospitals Gerver examined a patient with a very vivid paranoic condition. The following were some of his hallucinations and delusions: