This book "supplies a vocabulary of English words and idiomatic phrases 'arranged … according to the ideas which they express'. The thesaurus, continually expanded and updated, has always remained in print, but this reissued first edition shows the impressive breadth of Roget's own knowledge and interests."
This translation of the German edition first published in 1970, introduces the standard text on the comparative-historical method to an English-speaking audience. After surveying the general principles of diachronic-comparative linguistics, the book uses these principles to analyze the phonological and morphological structure of the Indo-European language group. Each section of the book has a detailed bibliography, so readers can progress from the general overview to a more in-depth examination of particular topics.