'Uber den Umlaut: Zwei Abhandlungen' (Carlsruhe, 1843) and 'Uber den Ablaut' (Carlsruhe, 1844)

Uber den Umlaut (1843) and Uber den Ablaut (1844) grew out of a review of Grimm's Deutsche Grammatik by Holtzmann, in which he also made an excursus into Bopp's theory of vowel gradation in Sanskrit. Holtzmann was the first to observe the correlation of guṇa and accent. At the same time he noted that loss (or absence) of the accent could mean loss or shortening of a vowel. Observations which, be i...