THE LITERATURE of 1954 on otitis media and complications contains many papers that are very interesting and instructive. The growing awareness of the importance of the conservation of hearing is especially reflected in the large number of articles on the modified radical mastoidectomy.
Diamant1 (Halmstad, Sweden) examined and classified the degree of pneumatization of the mastoids of 356 patients. He used a planimeter to measure the number of square centimeters covered by the cells on the x-ray films. He classified his material in five groups according to the method of Schwarz. In his classification, Group 1 has extremely large development and Group 5 has no development. His resulting groups were very similar to the remarkably large group of 3048 published by Seppala in 1946. About 4% had extremely large development. The second group, 35%, had moderately large development, with cells extending into the zygomatic region and into the