In a recent report we1reviewed our experiences with roentgen therapy in the treatment of 100 patients with various types of rheumatic disease. At that time it was concluded that the results in patients with multiple rheumatoid arthritis were unpredictable, unreliable and less satisfactory than was claimed by most other observers, but that in patients with rheumatoid arthritis of the spine (commonly called Marie-Strümpell arthritis or spondylitis rhizomélique) the results were encouraging. Of the 15 patients studied at that time 67 per cent showed definite evidence of improvement; some were completely relieved of symptoms, and in 2 with early involvement there was almost complete disappearance of all clinical evidence of disease. Because of these results we concluded: "We are quite encouraged with the possibilities of roentgen irradiation in this type of arthritis, and we are studying it further." Since that time we have observed the results of such treatment