A product of the Neogrammarian school, this six-volume work (published 18781910) remains an important contribution to Indo-European linguistics.Hermann Osthoff (18471909) and Karl Brugmann (18491919) were prominent members of the Neogrammarian school of linguistics. This six-volume work, published between 1878 and 1910, develops the theory that European languages, together with certain languages of central and southern Asia, have a common origin in a prehistoric Indo-European language.Hermann Osthoff (18471909) and Karl Brugmann (18491919) were prominent members of the Neogrammarian school of linguistics. This six-volume work, published between 1878 and 1910, develops the theory that European languages, together with certain languages of central and southern Asia, have a common origin in a prehistoric Indo-European language.Hermann Osthoff (18471909) and Karl Brugmann (18491919) were central figures in the circle of German scholars who rejected a doctrinal approach to the study of linguistics. They came to be known as the Neogrammarian school. At the core of their work was the theory that European languages, together with a subset of languages found in central and southern Asia, have a common origin in a single prehistoric language. They called this ancestor Indo-Germanic (known today as Indo-European) and claimed that its descendants are all related to one another by varying degrees of closeness. This six-volume elaboration of this thesis was published between 1878 and 1910. Volume 5 (1890) comprises various essays, including an account of how the numbers 10 and 100 are formed within Indo-European languages and an excursus detailing the forming of the nominative and accusative cases.Vorwort; 1. Die Bildung der Zehner und der Hunderter in dem indogermanischen Sprachen; 2. Anlautend indog. 'sr-' im Lateinischen; 3. Die Lautgruppe 'mr' im Lateinsichen, Germanischen und Altindischen; 4. Nochmals gr. 'heptakosioi' etc.; 5. Register zu Band I bis V.