This volume is a compilation of issues from volumes 3-5 of the American Phonetic Journal, a periodical dedicated to the study of the sound system of language. The journal was edited by American linguist and phonetician Randall P. Prosser, and contains articles, notes, and reviews on various aspects of phonetics, including articulatory phonetics, acoustic phonetics, and experimental phonetics. The text is essential reading for students and scholars of linguistics, speech science, and related fields. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.