This Congress and Exhibition have many useful purposes, and one of the most important of them is that they serve to bring together from all parts of the country men who otherwise are spending the rest of the year in industriously ploughing their own, and it is to be hoped fruitful, furrow. Here they can see the most recent inventions, they can spend their well-deserved earnings on taking them away, they can make friends anew, both among the other members of the Congress and among the instruments they see, and they can lay the foundations of fresh friendships. Here there is a great opportunity for informal discussion not only of puzzles in our work, but of problems about the future of radiology. The advantages of comparing notes and taking counsel in that way are extremely obvious, for “By uniting we stand, by dividing we fall”.During the past year there has been a very considerable development in connection with the initiation and development of the radium supply, with the treatment of malignant disease by radium, and with teaching and research. The Radium Commission has been active and has established a number of centres, the national centre of the post-graduate school, which has the imposing title The National Centre and Post-Graduate School of Radio-Therapy, the Mount Vernon Hospital, Northwood and the Radium Institute, has started post-graduate instruction.