In this presentation we shall describe the various types of injury of the ear resulting from blast waves, discuss the causative factors, show the audiometric findings and give a brief description of the treatment employed by us. Of 3,450 casualties admitted to a hospital ship during the first few months of the Solomon Islands Campaign, 1,922 were classified as having traumatic or surgical injuries, and 82 (4.2 + per cent) of the latter group had blast injury of the ears serious enough to warrant observation and treatment by the otolaryngologist. Many patients had varying degrees of aural damage from concussion waves, but blast injuries of a more serious character to the thoracic or the abdominal viscera of these patients precluded extensive otologic study, and for this reason they were not included in this series. Many facts of theoretic and practical application were obtained from this study, but for reasons beyond