"Under (b) 'Post-infectious psychoses' are to be grouped deliria, the mild forms of mental confusion, or the depressive, irritable, suspicious reactions which occur during the period of convalescence from infectious diseases. Physical asthenia and prostration are undoubtedly important factors in these conditions and differentiation from 'exhaustion deliria' must depend chiefly on the history and obvious close relationship to the preceding infectious disease. (Some cases which fail to recover show a peculiar mental enfeeblement.) In this group should be classed the 'cerebropathica psychica toxaemica' or the non-alcoholic polyneuritic psychoses following an infectious disease as typhoid, influenza, septicaemia, etc. "Under (c) 'Exhaustion deliria' are to be classed psychoses in which physical exhaustion, not associated with or the result of an infectious disease, is the chief precipitating cause of the mental disorder, _e.g._, hemorrhage, severe physical over-exertion, deprivation of food, prolonged insomnia, debility from wasting disease, etc. "Of the psychoses which occur with diseases of the ductless glands, the best known are the thyroigenous mental disorders. Disturbance of the pituitary or of the adrenal function is often associated with mental symptoms. "According to the etiology and symptoms the following types should therefore be specified under 'Psychoses with Other Somatic Diseases': "(a) Delirium with infectious disease (specify) "(b) Post-infectious psychosis (specify) "(c) Exhaustion delirium "(d) Delirium of unknown origin "(e) Cardio-renal disease "(f) Diseases of the ductless glands (specify) "(g) Other diseases or conditions (to be specified)." A study of 480 cases of psychoses with other somatic diseases reported from the New York state hospitals during 1918 and 1919 shows the following types represented:— _Number_ _Percentage_ Delirium with infectious diseases 68 14.16 Post-infectious psychoses 102 21.25 Exhaustion delirium 94 19.58 Delirium of unknown origin 36 7.50 Cardio-renal diseases 69 14.37 Diseases of the ductless glands 20 4.16 Other conditions 91 18.90 An analysis of 140 cases from the Massachusetts state hospitals in 1919 shows the following:— _Number_ _Percentage_ Delirium with infectious diseases 48 34.28 Post-infectious psychoses 25 17.85 Exhaustion delirium 26 18.57 Delirium of unknown origin 6 4.28 Cardio-renal diseases 16 11.42 Diseases of the ductless glands 1 .71 Other conditions 18 12.85