Polyglotta Africana is a study written by the German missionary Sigismund Wilhelm Koelle in 1854 in which he compared 156 African languages (or about 120 according to today's classification; several varieties considered distinct by Koelle were later shown to belong to the same language). As a comparative study it was a major breakthrough at the time.
Koelle based his material on first hand observations, mostly with freed slaves in Freetown, Sierra Leone. He transcribed the data using a uniform phonetic script devised by the Egyptologist Karl Richard Lepsius. Koelle's transcriptions were not always accurate; for example, he persistently confused [s] with [z] and [tʃ] with [dʒ]. His data were consistent enough, however, to enable groupings of languages based on vocabulary resemblances. Notably, the groups which he set up correspond in a number of cases to modern groups:
- North-West Atlantic — Atlantic
- North-Western High Sudan/Mandenga — Mande
- North-Eastern High Sudan — Gur
- Koelle, S.W., 1854, Polyglotta Africana, or a comparative vocabulary of nearly three hundred words and phrases, in more than one hundred distinct African languages. 188 pp. London, Church Missionary House.
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