This book is the first since 1897 to describe the earliest reconstructable stages of the prehistory of English. It outlines the grammar of Proto-Indo-European, considers the changes by which one dialect of that prehistoric language developed into Proto-Germanic, and provides a detailed account of the grammar of Proto-Germanic. The first volume in Don Ringe's <em>A Linguistic History of English</em> will be of central interest to all scholars and students of comparative Indo-European and Germanic linguistics, the history of English, and historical linguists. The next volume will consider the development of Proto-Germanic into Old English. Subsequent volumes will describe the attested history of English from the Old English period to the present.