Under all these considerations, with the fact that we had not found the Rovuma so favourable for navigation at the time of our visit as we expected, it was impossible not to coincide in the wisdom of our withdrawal; but we deeply regretted that we had ever given credit to the Portuguese Government for any desire to ameliorate the condition of the African race; for, with half the labour and expense anywhere else, we should have made an indelible mark of improvement on a section of the Continent. Viewing Portuguese statesmen in the light of the laws they have passed for the suppression of slavery and the slave-trade, and by the standard of the high character of our own public men, it cannot be considered weakness to have believed in the sincerity of the anxiety to aid our enterprise, professed by the Lisbon Ministry. We hoped to benefit both Portuguese and Africans by introducing free-trade and Christianity. Our allies, unfortunately, cannot see the slightest benefit in any measure that does not imply raising themselves up by thrusting others down. The official paper of the Lisbon Government has since let us know "that their policy was directed to frustrating the grasping designs of the British Government to the dominion of Eastern Africa." We, who were on the spot, and behind the scenes, knew that feelings of private benevolence had the chief share in the operations undertaken for introducing the reign of peace and good will on the Lakes and central regions, which for ages have been the abodes of violence and bloodshed. But that great change was not to be accomplished. The narrow- minded would ascribe all that was attempted to the grasping propensity of the English. But the motives that actuate many in England, both in public and private life, are much more noble than the world gives them credit for. Seeing, then, that we were not yet arrived at "the good time coming," and that it was quite impossible to take the "Pioneer" down to the sea till the floods of December, we made arrangements to screw the "Lady Nyassa" together; and, in order to improve the time intervening, we resolved to carry a boat past the Cataracts a second time, sail along the eastern shore of the Lake, and round the northern end, and also collect data by which to verify the information collected by Colonel Rigby, that the 19,000 slaves, who go through the Custom-house of Zanzibar annually, are chiefly drawn from Lake Nyassa and the Valley of the Shire.