"A gentleman who has studied the statistics of the ivory trade says the total amount of ivory imported into Great Britain during the nine years from 1873 to 1881 inclusive was 5286 tons. The whole number of tusks being known, the average weight per pair can be easily ascertained. This average is put at forty pounds, which is above rather than below the true weight. Assuming this to be correct, the 5286 tons of ivory represent 296,016 pairs of tusks, and consequently the same number of elephants, that have died long ago or have been slaughtered in later times to supply the demands of luxury for the past nine years. At this rate of destruction it will be seen how rapidly this noble animal must disappear, and how surely ivory will become a thing of the past. The highest price paid at a recent sale in Liverpool for the best African ivory was at the rate of $6740 per ton, or more than three dollars per pound. "If," concluded Frank, "you want another lecture on ivory please give me fair warning, so that I can get my information in proper shape." They returned to camp just as dinner was announced. Of course the chief topic of conversation was the proposed exploration of the Albert N'yanza and the land journey to Foueira. [Illustration: THE CENTRAL AFRICAN STEAMER "KHEDIVE."] The next morning the boys accompanied Doctor Bronson on a visit to the _Khedive_, the steamer in which the voyage on the Albert N'yanza was to be made. They found a handsome boat, of the dimensions already given, and propelled by a screw instead of paddles. It had two masts, so that sails could be spread in case the engines were disabled; and it had an awning extending the entire length of the deck, to shelter its passengers from the heat of the tropical sun. Below deck there were several comfortable cabins, and there were quarters for the crew, and a well-fitted galley for the cook's use. Altogether they were pleased with the boat, and Frank began to wish that he had not been so persistent about making the journey by land. But an instant's reflection drove away the thought, and he was firmer than ever in his purpose. The _Khedive_ was all ready for service, and only needed to be provisioned and supplied with the necessary fuel for working her engines. A Scotch engineer, named Cameron, was in charge of her, with a couple of Arab assistants. He was quite willing to be employed, and declared himself heartily weary of lying idle for six months, waiting for something to do, and constantly expecting orders that never came.