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I feel that I am going to have a hard time before me, not only today, but tomorrow, and the day after tomorrow. Especially today it will be difficult because we have been involved with problems of mobilization by new techniques, and it is hard to change our minds to these completely different problems which we shall discuss today and tomorrow.
Today, I must once again bring up a few questions of physiology, pathophysiology, and what we wish our new drum to do. That is the first question, and the second question is how can a graft survive if it is used as a new drum?
I will cover these today, and then tomorrow morning I shall go on with certain problems of plastic surgery of the middle ear, including the skin; what kind of a graft to use; what we do with the mucosa, and what we do when