estimates of ten millions and even twenty millions, according to the descriptions of
Fig. 143, — Sokoto-View Taken in the Interior.
![](//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/AFR_V3_D367_Sokoto_-_View_Taken_in_the_Interior.jpg/1000px-AFR_V3_D367_Sokoto_-_View_Taken_in_the_Interior.jpg)
Barth, Rohlfs, and other travellers, the population, excluding the Benue basin, can
scarcely be calculated at more than four millions.