He woke up in the night with a cry, got up afraid, and refused to go back into his own bed. He was mute, except for curses addressed to the nurses. After two hours he went to bed and to sleep. Next day he sat quietly with a depressed look, occasionally groaning deeply, talking in brief phrases about his anxiety, wanting his wife telephoned to, saying that he would not see his children, was going into the four planks, and the like. This situation lasted about a week. He became afraid of medicines and thought he had been poisoned, saying that he would rather be shot than poisoned and complaining that, though he had served France for fourteen months, they now wanted to kill him. In the night time he was agitated. He gave vent to cries, and threats, but this delirious state rapidly decreased and he became calm the night of September 27th. The upper extremities showed a tendency to catatonia. From this time forth, during the remaining month, the patient was immobile, mute, fearful, and mistrusting, depressed and always wore a cunning look. His disorientation decreased and he passed good nights. He would answer questions by groaning. He would say, “They think I am a Tartar.” The end of the mental disorder coincided with the cure of the paratyphoid fever. According to Merklen, the paratyphoid bacillus in these cases serves to bring out a psychopathic taint. This particular patient had always been of a sad demeanor, uncommunicative, very impressionable and emotional. Two other cases had always been somewhat below normal. Diphtheria: Post-diphtheritic symptoms. =Case 127.= (MARCHAND, 1917.) A farmer, 37, was evacuated March 20, 1916, for diphtheria. April 1, paralysis of tongue and uvula, impairment of vision. These symptoms rapidly improved, but paralysis of the legs appeared and then of the arms. This paralysis lasted until he was sent to the neurological center June 28 for post-diphtheritic paralysis, wherein it was found that voluntary movements of the legs could be performed, though painfully and of slight extent, that walking was impossible, that there was a considerable atrophy of legs and arms, that the knee-jerks, Achilles jerks and plantar reflexes were absent. There was complaint of pains in the legs and over nerve trunks.