An important contribution to the discussion as to the etiology of war neuroses was the statement made by Major General Ireland[104] to the Senate Committee on Military Affairs, that of the twenty-five hundred cases of shell shock awaiting transportation to the United States, twenty-one hundred recovered within a day or two after the armistice was declared. He gave the incidence of mental and nervous diseases in the forces in camps in this country as 2.5 per thousand and ten per thousand overseas. Another interesting phase of shell shock was the surprising results which various German observers obtained by the so-called "Kaufmann" treatment, the sudden application of a strong faradic current. One of the most significant contributions to the psychiatric history of the war as far as this country is concerned is the statement made by Col. Salmon[105] that in the latter part of December, 1920, of the beneficiaries of the War Risk Insurance thirty-two per cent were suffering from general diseases; forty-one per cent from tuberculosis; and twenty-seven per cent from various neuropsychiatric disorders. "The vague idea that all these men are suffering from "shell shock" or other mysterious maladies developed under the stress of modern warfare was replaced by the realization that more than two-thirds of all neuropsychiatric patients have one or another type of insanity." Of these cases sixty-six per cent had well developed psychoses; nineteen per cent psychoneuroses; five per cent epilepsy; two per cent mental deficiency; and eight per cent organic nervous diseases or injuries. On December 16, 1920, there were five thousand five hundred cases receiving hospital treatment. CHAPTER XII ENDOCRINOLOGY AND PSYCHIATRY