During the three years of my captivity in the jail at Berlin I frequently had occasion to exercise my profession as a medical doctor. Medical care was supposed to be given to the prisoners by an old practitioner of Berlin, a Dr. Becker. He visited the jail every day between the hours of nine and ten o’clock in the morning. Sick prisoners, accompanied by a non-commissioned officer, went to him in his office, which was situate in a section of the building adjoining the jail proper. Exactly at ten o’clock the aged doctor would leave his office, not to return until the following morning. For twenty-four hours every day I was the only physician in the section of the jail I occupied. The adjoining sections, which were likewise of triangular shape, were occupied by German soldiers who had been accused of breach of discipline. On several occasions I was called upon to give medical attention to some of these soldiers while they were awaiting trial before a court-martial. During the daytime I was free to visit these patients, going from cell to cell. At night, however, I was locked in my own cell like the other prisoners, and if something happened in the neighboring section a non-commissioned officer would arouse and conduct me to the place where my professional services were required. This happened very often. I was in this way not infrequently called to attend to a prisoner who had attempted suicide. In no fewer than ten instances it was a case of actual suicide, committed in some cases with a revolver; in other cases with a razor and sometimes by strangulation. No experience was more appalling than to hear in the dead of night the report of a gun. The walls would vibrate, the prisoners would be aroused from sleep, and one would ask the other who now had preferred a sudden end to a continuance of misery. A few minutes after the report my cell door would be opened by a non-commissioned officer. He would request me to follow him in order to ascertain the cause of death or render medical aid to an injured prisoner, as the case might be. Services which I rendered to prisoners of all nationalities, and oftentimes to non-commissioned officers, placed me in a favorable position with the guards. There was no attempt to restrict the freedom of my movements inside the prison, and in this way I was able to aid less fortunate prisoners, either with medical attention or by providing food where the need was most urgent. I received cordial co-operation from my fellow captives, more especially from the English-speaking. One had only to make an appeal on behalf of a prisoner to at once receive from others tea, biscuits, margarine or any little delicacy that was available. No sacrifice was too great if these men could only relieve, if only in a small measure, the distress of their fellows.