Abstract
East Dangla and West Dangla, two dialects of the Dangla language which belongs to
the Chadic language family, differ substantially in their tone systems. In numerous
lexical items, entire or partial tonal inversions are observable. Earlier research has not
succeeded in boiling this down to regular sound correspondences. In the meantime, data
from Central Dangla as a third dialect have become available, which provide important
insights into the matter. Based on all available materials, a new attempt to establish the
tonal correspondences is undertaken here. This results in a reconstruction of the tone
system of Proto-Dangla, the hypothetical ancestor of the modern varieties, together with
a chronological elaboration of the tonal changes that occurred in the individual dialects.
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