Some fifteen years ago, I started a study of the pathology of bone and joint tuberculosis, spurred thereto by the great difference of opinion which prevailed in practically all the aspects of the subject of joint tuberculosis in general, its etiology, its pathology, its diagnosis and its treatment, and I had not gone very far before the conclusion was forced upon me that the pathology of the disease rested upon a very insecure footing. Many things which passed as facts, and appeared in standard textbooks, were found on investigation to be based upon the unsupported statement of some eminent clinician, who had been content with the knowledge gained by a naked eye inspection of his specimens. The few writers on the histologic pathology of the disease had not received the attention which they deserved.
From time to time, I made known the results of my observations, but without making much