COMMERCE. 283 £. 8. d. To outlay for four hundred and eighty rottoli (about three and a half hundred-weight), at forty-four oock'ckahs 10 Freight to Dongola 10 „ from Dongola to Wady Chalfa . . . 14 „ per boat to Cairo 4 8 Duty in Kordofan 8 9 „ Darawi 11 „ Cairo .... . ..050 4 3 5 As the export duty is, according to the existing laws, only t\yelve shillings, ad valorem, the customs would amount only to sixteen shillings per hundredweight to Alexandria.

In the countries bordering on Kordofan, as Nuba, Takele, Kodero, etc., the gum rots every year, because Mehemed Ali makes no use of it, but is too ayaricious to allow any other person to derive benefit from it. The purchase might in those places be effected by barter.

Ivory.—Many of the merchants at Trieste, Marseilles, and Livomo, are even at the present day of the opinion that the ivory imported, via the Cape of Good Hope, is found in the East Indies, and have, therefore, given it the name of Asiatic ivory ; that, on the other hand, brought by way of Tripoli and Alexandria, they have termed African ivory ; whereas I can assure them, that more than one-third, if not the half of the former, is, properly speaking, African. During nineteen months of ray travels in the interior of Africa, T endeavoured to collect