To the Editor:—I am sending you a direct transcription from the transactions of a clinical meeting held at the Manhattan Eye, Ear, Nose and Throat Hospital, May 1, 1944, as it seems to establish not only priority for the use of cartilage but also the comparative values of the different types of cartilage obturators. I hope you will publish the article as it is. I am also sending you, under separate cover, two pictures which were made of the original experiment.
Philip G. MacDonald, M.D., New York.
[Transcription]
Preliminary Report of Animal Experiments to Secure Permanent Osseous Fenestra.
Dr. MacDonald: Dr. Kelly and Fellow Doctors: The large percentage of failures with the operation for otosclerotic deafness is due to the closure of the fenestra. Many attempts have been made to keep the fenestra open. You are well acquainted with these attempts. Different kinds of burrs have been used, that is