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Similar cases were reported in the recent naval engagements between the Chinese and Japanese. Wilson reports two cases of rupture of the membrane tympani caused by diving. Roosa divides the causes into traumatic, hemorrhagic, and inflammatory, and primary lesions of the labyrinth, exemplifying each by numerous instances.
Strange to say that after he had had a favorable reply he gradually recovered his hearing! In the same paper there is an instance of a case of deafness due to the sudden cessation of perspiration, and an instance of tinnitus due to the excessive use of tobacco; Roosa also mentions a case of deafness due to excessive mental employment. Perforation of the Tympanum.
Under traumatic causes he mentions severe falls, blows about the head or face, constant listening to a telegraphic instrument, cannonading, and finally eight cases of boiler-makers' deafness. Roosa cites a curious case of sudden and profound deafness in a young man in perfect health, while calling upon the parents of his lady-love to ask her hand in marriage.
Roosa of New York mentions the loss of hearing following a kiss on the ear. Dalby, in a paper citing many different causes of rupture of the tympanic membrane, mentions the following: A blow in sparring; violent sneezing; blowing the nose; forcible dilatation of the Eustachian canal; a thorn or twig of a tree accidentally thrust into the head; picking the ear with a toothpick.
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