The First International Congress of Radiology will go down in medical history as the greatest achievement of organized radiologists. Not only were there assembled for the first time the greatest number of radiologists—over five hundred—but among them the most distinguished scientists from every civilized country in the world. There were four full days of intensely scientific work in English, French, German, Spanish, and Italian, and to one privileged to attend and understand, the results were invaluable. One could not help being impressed with the masterful manner in which our British colleagues handled the Congress, the size of which exceeded their expectations by several hundred members. As an American, it gives me pleasure to feel that the work of the American contributors measured up in every way with that of our foreign collaborators. The dinners and luncheons tendered by our British hosts were delightful, and well attended. The outstanding points of the Congress, as viewed by the writer, were: 1. The astonishing grasp of the subject of radiology which was demonstrated by those who spoke before the Congress, namely, H. R. H. the Duke of Connaught and Lord Robert Cecil, the latter one of Britain's greatest statesmen. 2. The spirit of co-operation which existed between the surgeons and the radiologists. This was happily expounded by Sir Berkeley Moynihan, who delivered the McKenzie Davidson lecture. 3. The complete success of the Congress, due largely to the personal sacrifice and work of Dr. C. Thurstan Holland, Dr. A. E. Barclay, Dr. Robert Knox, Sir Humphry Rolleston, Dr. John Muir, Dr. James Metcalfe, Dr. Stanley Melville, Dr. J. E. A. Lynham, and their co-workers. The election of Dr. Gösta Forssell, of Stockholm, as President, at the conclusion of the Congress, met with unanimous approval and he was greeted with an ovation which will not be erased from memory. The Ladies' Committee were especially gracious and kind in providing real entertainment for the visiting ladies.