For some years, views regarding the origin and treatment of certain diseases of the skeleton have been expanded and improved. The following observations on a man aged 56, who had been bedridden for several years and whose condition had been diagnosed as osteomalacia, will serve in this connection.1 The violent pain which the patient suffered defied all methods of treatment. He had given up all hope of recovery, and had come to the conclusion that he had an incurable disease. His only desire was that some chair or other apparatus could be constructed in which he would be able to rest without too much pain. REPORT OF CASE The patient was married and had a healthy wife and a healthy grown son. The somewhat complicated anamnesis showed that the patient had been well until 1922, when for the first time he noticed stiffness in his legs. In 1924 he fell