Nevertheless, a great joy came to me as a consequence of the victory obtained by the sacrifice of so many human lives. I had lived, though I had scarcely expected it, to see the reparation of more than a century of injustice that had been done to Poland, my native country, and that had kept her in slavery, her territories and people divided among her enemies. It was a deserved resurrection for the Polish nation, which showed herself faithful to her national memories during the long period of oppression, almost without hope. The dream that appeared so difficult to realize, although so dear, became a reality following the storm that swept over Europe. In these new conditions I went to Warsaw and saw my family again, after many years of separation, in the capital of free Poland. But how difficult are the conditions of life of the new Polish republic, and how complicated is the problem of reorganization after so many years of abnormal life! In France, partly devastated and suffering from the loss of so many of her citizens, the difficulties created by the war are not yet effaced, and the return to normal work is being attained only gradually. The scientific laboratories feel this state of affairs and the same condition prevails for the Radium Institute. The various radiologic organizations created during the war still partially exist. The Radiographic Nurses' School has been maintained at the request of the Board of Health. The emanation service, which could not be abandoned, is also continued in a considerably enlarged form. It has passed under the direction of Doctor Regaud, Director of the Pasteur Laboratory of the Radium Institute, and is developing into a great national service of radiumtherapy. The work of the laboratory has been reorganized, with the return of the mobilized personnel and the students. But in the restrained circumstances under which the country still exists, the laboratory lacks ways and means for its efficient development. Particularly are wanted an independent hospital for radiumtherapy (which is called _Curietherapy_ in France), and an experimental station, outside of Paris, for experiments on great quantities of material, such as are needed for the progress of our knowledge of radioactive elements. I myself am no longer young, and I frequently ask myself whether, in spite of recent efforts of the government aided by some private donations, I shall ever succeed in building up for those who will come after me an Institute of Radium, such as I wish to the memory of Pierre Curie and to the highest interest of humanity.