IN THE 1949 literature on otitis media and complications there are a large number of excellent articles, many of which should be studied in the original. The scarcity of good American articles noted last year is no longer evident.
ANATOMY
DeLisa1 calls attention to the suture line separating the squamous part of the mastoid process and the petrosa. He pointed out that while the usual mastoid infection involves both portions, it is possible for either set of cells to be infected without the other. Infection of the squamous part alone would be marked by supraauricular tenderness and probably by sagging of the superoposterior canal wall. Infection in the lower portion would produce tenderness in the lower part of the mastoid.
CHEMOTHERAPY AND BIOTHERAPY
Furstenberg2 states that if improvement in the patient's condition with the use of penicillin is not definitely noted within 72 hours, it is likely that