Concept
Hearing aids
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Five aged doctors crushed together in consultation. Coloured lithograph by F-S. Delpech after L. Boilly, c. 1823.
Boilly, Louis, 1761-1845.Date: [1823]Reference: 16314iPart of: Grimaces
- Pictures
- Online
A man attempting to alert a deaf farmer using an ear trumpet as to the plight of his horses and cart. Coloured etching.
Reference: 10959i- Pictures
Ear trumpets and hearing aids (figs. 2-4), and surgical instruments for use on the ear and the nose. Etching by J. Mynde, 1743, after L. Heister.
Heister, Lorenz, 1683-1758.Date: [MDCCXLIII [1743]]Reference: 2823178i
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The dentaphone : a new scientific invention, which enables the deaf to hear by the sound-vibrations conveyed through the medium of the teeth, and the deaf and dumb to hear and learn to speak.
American dentaphone co., Cincinnati.Date: [1879], [©1879]- Pictures
Five aged doctors crushed together in consultation. Coloured lithograph after L. Boilly, c. 1823.
Boilly, Louis, 1761-1845.Date: 1823Reference: 16316iPart of: Grimaces