John Harrison is the author of A Treatise on the Physiology & Diseases of the Ear, Cases Illustrative of the Treatment of Diseases of the Ear, “A” Treatise on the Physiology and Diseases of the Ear, A Treatise on the Physiology and Diseases of the Ear; containing a comparative view of its structure and functions, and of its various diseases, etc, The Principles of Mr. Harrison's Time-keeper.