In just over 200 pages, the world's leading expert on Hausa linguistics sketches how the sound system and grammar developed over time. Of equal interest are properties shared with other languages of the Chadic group vs. features--particularly the verbal system--that hardly resemble other Chadic languages at all.
The volume covers all the basics and offers reasons for accepting some popular accounts while rejecting others. It also doesn't hesitate, where little historical information is available, to speculate on how a particular word or rule might have come about.