""Defective Hearing: Its Curable Forms And Rational Treatment"" is a book written by James Keene and published in 1876. The book is a comprehensive guide to understanding and treating various forms of hearing loss. Keene explains the anatomy and physiology of the ear, as well as the causes of hearing loss, such as infection, injury, and age-related degeneration. He also provides a detailed analysis of the different types of hearing loss, including...