Democratic Sentinel, Volume 21, Number 29, Rensselaer, Jasper County, 16 July 1897 — Prevalence of Deafness. [ARTICLE]

Prevalence of Deafness.

It is stated on good authority that three persons out of every five In this country who have attained the age of 40 years, are more or less deaf in one or both ears. A large proportion of this deafness is caused by catarrh.