Pow-Wows, or Long Lost Friend, by John George Hoffman, [1820], at sacred-texts.com
FOR DEAFNESS, ROARING OR BUZZING IN THE EAR, AND FOR TOOTHACHE.
A few drops of refined camphor-oil put upon cotton, and thus applied to the aching tooth, relieves very much. When put in the ear it strengthens the hearing and removes the roaring and whizzing in the same.