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Published online by Cambridge University Press: 06 February 2009
According to Sweet, the German linguist Johann Andreas Schmeller was the first to use [ə] as a phonetic symbol (Sweet 1877: 175). (Although Sweet gives no bibliographical reference, the work he must have had in mind was Schmeller's Die Mundarten Bayerns of 1821; cf. also Ellis 1874: 1357.) Schmeller uses [ə] for the ‘dumpfe Vocallaut’ in words like Semmel, Nennen, Wetter, and for the second element of various diphthongs, e.g. in dialectal pronunciations of Not(h), Bruder, etc. (Schmeller 1821: 25, 72, 141, and passim). According to Abercrombie (1946), an earlier use of [ə] than Schmeller's is to be found in William Thornton's Cadmus of 1793, for the vowel in run, come, etc. However, neither the original nor the reprint of Cadmus uses a [ə], but the symbol [ℶ].