An ear gymnasium, devised .by & Michigan inventor, is said to aid those of defective hearing- by exercising the nerve centres of the ear. Special ear-i phones are slipped over the . patient s head, and at the tone frequencies at; Which hearing is defective, a series of tone; exercises is given at a volunie Brest enough to be heard by the.patient. Lins is said to improve the hearing.
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Bibliographic details
Dominion, Volume 26, Issue 220, 13 June 1933, Page 6
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67Untitled Dominion, Volume 26, Issue 220, 13 June 1933, Page 6
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