Jobson's inquiries regarding this "golden trade" informed him that the great demand for salt in the Gambia trade arose from the desire for it among the Arabiks of Barbary; that the natives themselves only consumed a small percentage of this import, trading away the main to those Arabiks in the hinterland, who in their turn traded it for gold to tombak, where the demand for it was great, because that city, although possessing all manner of other riches and commodities, lacked salt, so that the Arabiks did a good trade therein.
"West African studies"
Mary Henrietta Kingsley