Published in 1932, Coptic Sounds by William H. Worrell of the University of Michigan thoroughly examines the main currents in the history of Coptic phonetics from a physiological and psychological standpoint. This research aims to present the complexities of Coptic sound-history in a manner not traditionally familiar to orientalists, employing precise phonetic symbols alongside familiar egyptological ones. The study begins with Coptic as a living tradition and extends back to the origins of Egypt's national language, leaning on esteemed scholars such as Erman, Sethe, Steindorff, Spiegelberg, and Burchardt for foundational data. Though written independently of recent significant publications by Ember and Czermak, the book offers valuable insights for phoneticians, copticists, and egyptologists by enhancing the understanding of spelling, etymology, and dialectic differences over the vast history of the Egyptian language. Additionally, it provides beneficial perspectives for Greek papyrology. The publication also acknowledges the critical contributions and feedback from Professor Charles C. Fries.