Prof. Joseph Thomayer celebrated his seventieth birthday, March 23. The echo which this occasion found in the daily and professional press demonstrated the popularity which this founder of the Czech school of internists enjoys in public and professional estimation. Joseph Thomayer was born in Trhanov, a small village in southern Bohemia. During his student days he was active in literary circles and a close friend of many Czech writers. He graduated at Prague in 1876; and became instructor of pathologic anatomy under Professor Klebs. He studied surgery in Germany, but his life career was determined by his work under Professor Charcot in Paris. On returning to Prague in 1880, he became assistant to Professor Eiselt, and since has devoted himself to internal medicine. It was through his energy that the Scientific Association of Czech Physicians and the journal published by that body became popularized among the medical profession.