202 x 140 mm. Showing the dredger Quorra at work, with a pipeline supported on pontoons running from the boat to the riverbank. Bell travelled on the Quorra during his trip up the Benue in 1910: 'At Barijuko I found awaiting me the Quorra, which is to take us up the Benue. She is really a dredger, and was brought out last year to deepen the Niger at certain places. She cost the trifle of £40,000 and has, so far, done little or nothing in the way of dredging. I do not exactly know what is wrong with her, but something always seems to prevent her doing the work for which she is intended. The river is now at its full height, and all dredging is suspended for some months, so the Quorra is being used, now and then, as a passenger ship. She has excellent cabin accommodation, with electric light, fans, etc., and my room is so comfortable that I shall be quite sorry to go ashore again. I must say, though, that it goes against my grain to use a ship that costs a matter of £20 a day in fuel alone. However, as it is the British taxpayer who pays, it doesn't matter very much.' (Bell 1910, September 4).