It is not now known whether Mirambo is alive or not: some say that he died long ago, and his son keeps up his state instead.
In reference to this Nile source I have been kept in perpetual doubt and perplexity.

I know too much to be positive.

Great Lualaba, or Lualubba, as Manyuema say, may turn out to be the Congo and Nile, a shorter river after all--the fountains flowing north and south seem in favour of its being the Nile.

Great westing is in favour of the Congo.

It would be comfortable to be positive like Baker.