A review of the literature on a subject such as chronic progressive deafness is more valuable for reference if its scope is widened to include papers published in foreign languages. To this end we have obtained the collaboration of Dr. Michel Portmann (French), Dr. Enrico Bozzi (Italian), Dr. Jerzy Szpunar (Polish and Russian), and Dr. Thea Hennecke (German). A portion of the other language papers are abstracted from surveys published in "Excerpta Medica," the Annuals of Otology, Rhinology and Laryngology, and in the A. M. A. Archives of Otolaryngology.
The various papers are abstracted to include new material pertaining to the subject of deafness. Occasionally more space is devoted to a scholarly presentation of old and familiar material, and so ultimately we include both new and old information presented in easily read and condensed form.
The material has been arranged in the following sequence: otosclerosis, Ménière's disease, reconstructive surgery for