Note 178 — Chapter IV · PHONOLOGY AND SEMATOLOGY. (continued 2)
Reading edition
In many instances, however, guṇa and vṛiddhi seem to be due to the presence of the vowel a in the following syllable, which has been anticipated, as in the case of the German umlaut or the Greek epenthesis (as in λόγοις for the locative λόγο-σι, and then, by false analogy, λόγοισι).