The American nation is generous, and always ready to appreciate an action inspired by considerations of general interest. If the discovery of radium has so much sympathy in America, it is not only because of its scientific value, and of the importance of medical utilization; it is also because the discovery has been given to humanity without reservation or material benefits to the discoverers. Our American friends wanted to honor this spirit animating the French science. The radium itself was not brought to the ceremony. The President presented me with the symbol of the gift, a small golden key opening the casket devised for the transportation of the radium. Our sojourn at Washington following the principal ceremony included a very agreeable reception at the French Embassy and the Polish Legation, a reception at the National Museum, and some laboratory visits. The itinerary of our journey from Washington included visits to the cities of Philadelphia, Pittsburgh, Chicago, Buffalo, Boston, and New Haven, a visit to the Grand Canyon, and to Niagara Falls. On that trip I was the guest of several universities which did me the honor of bestowing honorary degrees on me. I have to thank for these the universities of Pennsylvania, of Pittsburgh, of Chicago, the Northwestern University, Columbia University, Yale University, the Women's Medical College of Pennsylvania, the University of Pennsylvania, Smith College, and Wellesley College, while I thank Harvard University for her reception. The delivery of honorary degrees in American universities is accompanied by solemnities. In principle, the presence of the candidate is required, and the delivery takes place at the annual commencement, but, in some cases, special ceremonies were organized in my favor. The university ceremonies in America are more frequent than in France, and play a more important part in the university life. Especially is this true at the annual commencement, which begins with an academic procession over the grounds of the university, the procession including the officials, the professors, and graduates in academic caps and gowns. Afterwards all assemble in a hall where are announced the diplomas corresponding to the grades of bachelor, master, and doctor. There is always a musical part in the program, and addresses are delivered by the officials of the university or invited orators. These addresses are naturally devoted to dignifying the ideals and the humanitarian purposes of education; but in certain cases it seems permitted to introduced point of American humor. These ceremonies are on the whole very impressive, and certainly contribute to keep a bond between the university and the alumni. This is a favorable circumstance for those great American universities which are sustained entirely on private foundations. It is only in more recent times that most States have created universities supported by the State.