During the past year we have seen more papers on the functional testing of hearing in the German literature than have been apparent for some time. As we noted several years ago, articles in German had become scarce, and the literature in the United States and England had by far overcome the lead which the Germans had many years ago held in so predominant a fashion.
Kelley1 presents the historical aspects of bone conduction. Conduction of sound through the cranial bones was known as early as the sixteenth century. Ingrassia was one of the first to report on it, as was discovered in his work, edited in 1603, after his death. Capivacci in 1589 applied the knowledge of bone conduction to clinical otology by having the patient hold one end of a rod between his teeth, with a vibrating string of a musical instrument in contact with the other. If
SONNENSCHEIN R, LESHIN N. FUNCTIONAL EXAMINATION OF HEARING. Arch Otolaryngol. 1938;27(1):97–119. doi:10.1001/archotol.1938.00650030104009
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