Phonological stages from Proto-Indo-European through the end of Proto-Germanic

The following changes are known or presumed to have occurred in the history of Proto-Germanic in the wider sense from the end of Proto-Indo-European up to the point that Proto-Germanic began to break into mutually unintelligible dialects. The changes are roughly in chronological order, with changes that operate on the outcome of earlier ones appearing later in the list. The stages distinguished and the changes associated with each stage rely heavily on Ringe 2006, Chapter 3, "The development of Proto-Germanic". Ringe in turn is summarizing standard concepts and terminology.

Pre-Proto-Germanic (Pre-PGmc) This stage began with the separation of a distinct speech, perhaps while still forming part of the Proto-Indo-European dialect continuum. It contained many innovations that were shared with other Indo-European branches to various degrees, probably through areal contacts, and mutual intelligibility with other dialects would have remained for some time. It was nevertheless on its own path, whether dialect or language.

3.Johannes Friedrich Heinrich Schmidt (July 29, 1843 – July 4, 1901) was a German linguist. He developed the Wellentheorie ('wave theory') of language development.BiographySchmidt was born in Prenzlau, Province of Brandenburg. He was educated at Bonn and at Jena where he studied philology (historical linguistics) with the great Indo-Europeanist August Schleicher and specialized in Indo-European, especially Slavic, languages. He earned a doctorate in 1865 and worked from 1866 as a teacher at a gymnasium in Berlin.In 1868 Schmidt was invited by the University of Bonn to take a position as professor of German and Slavic languages. In Bonn he published the work Die Verwandtschaftsverhältnisse der indogermanischen Sprachen ('The Relationships of the Indo-Germanic Languages', 1872), which presented his Wellentheorie ('wave theory'). According to this theory, new features of a language spread from a central point in continuously weakening concentric circles, similar to the waves created when a stone is thrown into a body of water. This should lead to convergence among dissimilar languages. The theory was directed against the doctrine of sound laws introduced by the Neogrammarians in 1870.From 1873 to 1876 Schmidt was a professor of philology at the University of Graz in Austria. In 1876 he returned to Berlin, where he worked as a professor at Humboldt University. He died in Berlin at the age of fifty-seven.

Franz Bopp….. Career

The first paper from his years of study in Paris appeared in Frankfurt am Main in 1816, under the title of Über das Conjugationssystem der Sanskritsprache in Vergleichung mit jenem der griechischen, lateinischen, persischen und germanischen Sprache (On the Conjugation System of Sanskrit in comparison with that of Greek, Latin, Persian and Germanic) (Windischmann contributed a preface). In this first book Bopp entered at once the path on which he would focus the philological researches of his whole subsequent life. He did not need to prove the common parentage of Sanskrit with Persian, Greek, Latin and German, for previous scholars had long established that; but he aimed to trace the common origin of those languages' grammatical forms, of their inflections from composition – a task which no predecessor had attempted. By a historical analysis of those forms, as applied to the verb, he furnished the first trustworthy materials for a history of the languages compared.

After a brief sojourn in Germany, Bopp travelled to London where he made the acquaintance of Sir Charles Wilkins and H. T. Colebrooke. He also became friends with Wilhelm von Humboldt, then Prussian ambassador at the Court of St. James's, to whom he taught Sanskrit. He brought out, in the Annals of Oriental Literature (London, 1820), an essay entitled, "Analytical Comparison of the Sanskrit, Greek, Latin and Teutonic Languages", in which he extended to all parts of the grammar what he had done in his first book for the verb alone. He had previously published a critical edition, with a Latin translation and notes, of the story of Nala and Damayanti (London, 1819), the most beautiful episode of the Mahabharata. Other episodes of the Mahabharata – Indralokâgama, and three others (Berlin, 1824); Diluvium, and three others (Berlin, 1829); a new edition of Nala (Berlin, 1832) – followed in due course, all of which, with A. W. Schlegel's edition of the Bhagavad Gita (1823), proved excellent aids in initiating the early student into the reading of Sanskrit texts. On the publication, in Calcutta, of the whole Mahabharata, Bopp discontinued editing Sanskrit texts and confined himself thenceforth exclusively to grammatical investigations.

After a short residence at Göttingen, Bopp gained, on the recommendation of Humboldt, appointment to the chair of Sanskrit and comparative grammar at Berlin in 1821, which he occupied for the rest of his life. He also became a member of the Royal Prussian Academy the following year.

He brought out in 1827 his Ausführliches Lehrgebäude der Sanskritsprache, on which he had worked since 1821. Bopp started work on a new edition in Latin, for the following year, completed in 1832; a shorter grammar appeared in 1834. At the same time he compiled a Sanskrit and Latin glossary (1830) in which, more especially in the second and third editions (1847 and 1868–71), he also took account of the cognate languages. His chief activity, however, centred on the elaboration of his Comparative Grammar, which appeared in six parts at considerable intervals (Berlin, 1833, 1835, 1842, 1847, 1849, 1852), under the title Vergleichende Grammatik des Sanskrit, Zend, Griechischen, Lateinischen, Litthauischen, Altslawischen, Gotischen und Deutschen (Comparative Grammar of Sanskrit, Zend (Avestan), Greek, Latin, Lithuanian, Old Slavonic, Gothic and German).

How carefully Bopp matured this work emerges from the series of monographs printed in the Transactions of the Berlin Academy (1824–1831), which preceded it. They bear the general title, Vergleichende Zergliederung des Sanskrits und der mit ihm verwandten Sprachen (Comparative Analysis of Sanskrit and its related Languages). Two other essays (on the "Numerals", 1835) followed the publication of the first part of the Comparative Grammar. Old Slavonian^{[ disambiguation needed ]} began to take its stand among the languages compared from the second part onwards. E. B. Eastwick translated the work into English in 1845. A second German edition, thoroughly revised (1856–1861), also covered Old Armenian.

In his Comparative Grammar Bopp set himself a threefold task:

1. to give a description of the original grammatical structure of the languages as deduced from their intercomparison

2. to trace their phonetic laws, and

3. to investigate the origin of their grammatical forms.

The first and second points remained dependent upon the third. As Bopp based his research on the best available sources and incorporated every new item of information that came to light, his work continued to widen and deepen in the making. Witness his monographs on the vowel system in th Teutonic languages (1836), on the Celtic languages (1839), on the Old Prussian (1853) and Albanian languages (Über das Albanesische in seinen verwandtschaftlichen Beziehungen, Vienna, 1854), on the accent in Sanskrit and Greek (1854), on the relationship of the Malayo-Polynesian with the Indo-European languages (1840), and on the Caucasian languages (1846). In the two latter, the impetus of his genius led him on a wrong track.