into the war), at the top of the chart, the line runs almost straight until the battle of the Marne, when there is a sudden drop. It recovers, however, with the continuance of the German advance, declines during the winters of 1914-1915 and 1915-1916, only to ascend again with the coming of spring; falls sharply after the final reverse at Verdun, drops to a still lower level than before during the anxious winter of 1917-1918, rises almost to its highest peak during Hindenburg’s tremendous onset in the following spring; begins a gradual decline in ratio to the steady increase in the strength of the American armies, and finally, beginning with the defeat of the all-conquering Germans at Château-Thierry, goes plunging downward until, on November 11, 1918, the line ends at the bottom of the chart in the abyss of national despair. Shortly after the Armistice, when the morale of Germany’s civil population was no longer of any interest save to the Germans themselves, the symptoms of a new and even more alarming disorder became apparent to the specialists of the Psychologic Subsection, whereupon, in order to keep this new menace to the health of the world under observation, a new chart was started and a fresh series of reports were begun, the personnel of the section being instructed to immediately note all movements and manifestations likely to prove destructive of good order and stable government. On huge wall-maps of Europe and Asiatic Russia various kinds of disturbances or threatened disturbances—revolutions, mutinies, riots, racial and religious troubles, strikes, labor and political demonstrations—were indicated by pins of different colors: Red: Bolshevism, Syndicalist, or Socialist. Brown: Political revolution, counter-revolution, anti-Bolshevist or social disturbances. Blue: Industrial strikes. Green: Food riots, plundering, or difficult food situation. White: Racial troubles. Black: Military mutiny. Yellow: Disease epidemic. Each day a report was made out, compiled from various sources, covering the subject of European disturbances, these reports being arranged geographically. Every Friday a weekly summary was prepared in numbered paragraphs, condensing the daily reports and giving, if possible, an interpretation of the trend of unrest during the preceding week. As the most threatening disturbances during the winter of 1918-1919 were of a Bolshevist nature, it was deemed advisable to issue a weekly report on the activities of Trotzky, Lenine & Co. and their followers.