New York, June 18, 1908. To the Editor: —The rapid increase of years renders it hardly probable that I can accomplish much further work of novelty or interest in surgery. Hence, I may be pardoned for calling attention to what I have done in the past in connection with a lesion presented in an able form by Dr. Abbott of Portland, inThe Journal, May 23, p. 1675. He ascribes the recognition and the requisite surgical treatment of an unusual form of joint-locking due to a duplication of the synovial membrane on the under surface of the patella to Dr. Goldthwait, who operated for this condition in 1902. I venture to state that in the Medical Record of July 16, 1892, it will be found that I called attention to this lesion and, by a similar procedure to that used by Dr. Abbott, removed the projecting fold in two instances,