PROFESSOR VON LEYDEN.

Professor Ernest von Leyden of Berlin celebrated his 70th birthday on April 20 last. The occasion was taken as a suitable opportunity for felicitation by medical men all over the world. Professor von Leydenis one of the greatest of living practical clinicians and his contributions to internal medicine represent some of the most significant practical advances of the last thirty years. In many lines of medical practice his work and that of his clinic, from the time when he presided over the department of internal medicine at the small university of Koenigsberg nearly forty years ago, to his more than a quarter of a century at the Charité in Berlin, has been thoroughly representative of what is best in the progress of applied medicine and has proven a fruitful source of suggestion and inspiration to clinicians the world over. The Festschrift for his birthday, dedicated to Professor von Leyden by