Under the auspices of the Division of Medical Sciences of the National Research Council, a distinguished committee has just made available the results of a survey as to the physical causes of deafness in the United States.3 This report,4 published in the Archives of Otolaryngology, gives the results of the examination of 3,734 patients in nine different institutions.
In his introduction to the report, Dr. Charles W. Richardson points out the method of organization of the work and the scope of the studies. These systematic inquiries not only reveal the present status of deafness but also point the way to preventive and curative methods.
Apparently the sex of the person is not important as related to congenital or acquired deafness. Perhaps the most dangerous period for the development of severe deafness in children is before they have reached the third year. Much of the evidence is due, however,