In the preliminary report of the improved technic of the Thiersch graft following the radical mastoid operation,1 I reported a series of eighteen cases, in which graft was applied four days following operation, and said that never before had such a series of cases been brought to healing in such a short time and that never before had the hearing been so uniformly good (Table 1).
I shall here report a series of twelve cases in which I operated. Graft was applied at the time of operation. This report will be even better than the former, besides eliminating a second operation that consumes almost as much time as the original mastoid operation, while the original operation is only lengthened about fifteen minutes. This of itself, I consider a great boon for the procedure; in fact, it makes the radical ear operation a simple, concise and precise operative procedure, attended