A contrivance for the benefit of deaf persons; as usually constructed, it resembles in shape a marine speaking trumpet, but smaller, seldom exceeding six or eight inches in length. The party using the trumpet inserts the small end within his ear, and the speaker applies his mouth to the wide end. Dr. Morrison, of Aberdeen, however, contends that this construction is erroneous, and that the end which is applied to the ear should be large enough to include the whole ear, instead of being inserted within it The Doctor states, that having laboured under a deafness for a number of 3'ears, he applied in every quarter for the most improved ear trumpet; but from none of them could he derive the most trivial benefit. He at length ordered one to be made of the finest block tin, constructed as above recommended, and found it to answer beyond his most sanguine hopes. The annexed cut is a representation of a flexible ear trumpet, invented by Mr T. Hancock, of Fulham. It is made of Indian rubber, covered with a net-work of gold or silver wire, and, from its flexibility, is rendered more convenient for portability and for ready application in any situation that may be required.

Mr. Hancock has successfully applied tubes of this description as speaking pipes, to communicate verbally with the various parts of an extensive manufactory.

Ear Trumpet 433