Since these lines were written, I have to lament the collapse of the Livingstone-Congo Expedition. In 1872 the great explorer's friends, taking into consideration the prospect of his turning westward, organized a "relief" from West as well as from East Africa. Mr. J. Young, of Kelly, generously supplied the sinews of travel, and Mr. Clements R. Markham, Secretary of the Royal Geographical Society, lent important aid in preparing the exploration. Navigating-Lieutenant W. J. Grandy, who had seen service on the eastern coast of Africa, landed at S. Paulo de Loanda in early 1873, and set out from Ambriz in March of that year. The usual difficulties were met and overcome, when Lieutenant Grandy was summarily recalled. The official explanation ("Royal Geographical Society," December 14th, 1874), is that the measure was in consequence of Livingstone's death. The traveller himself says:--"Complying with instructions, we, with many regrets at the idea of leaving our work unfinished when all seemed so full of promise, commenced preparations for the return, leaving good presents with the chiefs, in order to procure a good reception for those who might come after us." An Ex-President of the Royal Geographical Society had asserted, "The ascent of the (Upper) Congo ought to be more productive of useful geographical results than any other branch of African exploration, as it will bring to the test of experiment the navigability of the Congo above the Falls, and thus possibly open out a means of introducing traffic by steam into the heart of the continent at least two thousand miles from the mouth of the river." With this explicit and stimulating assertion before us, we must lament that England, once the worthy rival in exploration of Spain, Portugal, and the Netherlands, is now too poor to support a single exploration on the West African Coast, when Germany is wealthy enough liberally to subsidize two. Note. A nous deux, Dr. E. Behm! My objections to your paper are the three following: 1. It generally understates the volume of the Nzadi, by not allowing sufficiently for the double equinoctial periods of high water, March to June, as well as September to December; and by ignoring the north-equatorial supply. 2. It arbitrarily determines the question of the Tanganyika, separating it from the Nile-system upon the insufficient strength of a gorilla, and of an oil-palm which is specifically different from that of the Western Coast; and 3. It wilfully misrepresents Dr. Livingstone in the matter of the so-called Victoria Nyanza.