Karl Warnke's grammatical essay provides fascinating insights into the ways in which English words are formed through the manipulation of vowel sounds, known as ablaut. This concept is critical to understanding the structures of languages and the ways in which they evolve over time. His clear and concise prose makes complex linguistic concepts accessible to readers of all levels. 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.