Tommo So is a Dogon language with approximately 60,000 speakers in Mali, West Africa. As only the second full grammatical description of a Dogon language, this volume is a critical resource for solving the mystery of Dogon's genetic affiliation with other languages in Africa. Tommo So is an SOV language with isolating nominal morphology and agglutinative verbal morphology; suffixes on the verb mark tense/aspect/negation as well as subject agreement. The phonology is sensitive to levels of verbal morphology in that variable vowel harmony applies less frequently as one moves to outer layers...