On october 5, 1937, President Franklin D. Roosevelt aroused the democratic world by calling for a quarantine of the aggressor nations. Since that morning in Chicago there has always been uncertainty as to how the President meant to implement his speech. A review of the available documents concerning the aftermath of the quarantine speech provides four additional notes which help clear up this uncertainty. The first demonstrates that Roosevelt instead of backing down before seemingly overwhelming opposition from the American public, believed he could persuade not only his fellow countrymen but “90 percent of the population of the world” to quarantine the aggressor nations. The second shows that the President looked upon the Nine Power Conference which met in Brussels during November, 1937, as an opportunity to initiate positive action in the Far East. The third, by an analysis of the activities of Norman Davis, the American delegate to that conference, indicates the extent to which the President was willing to go in imposing a quarantine against Japan. The last note attempts to explain briefly why by mid November Roosevelt finally “pulled in his horns” and permitted the Nine Power Conference to disintegrate. From these notes comes further support for the conclusions that the man who met defeat at Brussels was President Roosevelt and the policy which failed to be adopted was that of a quarantine, of containment, of the aggressor nations.