Mr. FRANCIS GALTON asked what commercial use was made of the Niger and its two branches? How many European ships ascended the stream yearly? Did any ascend the Chadda ? And what was the amount of exports ? Bishop CROWTHER, in reply, said at Egg a, the limit of Trotter's Expedition, 360 miles up, about 46 tons of ivory were collected last year. When Mr. Macgregor Laird attempted to open up trade on the Upper Niger in 1857, only five casks of Shea-butter were collected, but during the past year 2000 casks were brought down. Between 5000 and 6000 casks of oil were also exported. Instead of the small steamers carrying 80 or 100 casks, large vessels were now being built to carry from 400 to 600 casks. There were about six steamers engaged in the trade, and they made five or six trips every year.
Discussion on Bishop Crowther's Paper (Notes on the River Niger)
Proceedings of the Royal Geographical Society