But on arriving in London I was again so repeatedly solicited to make public wbat I had seen, that, on reaching home, I determined to issue these volumes containing an account of the leading incidents in my travelling experiences. To enter into the details of all the scientific observations that I made would occupy me for at least three years, and would interfere altogether with my scheme for returning to Africa as soon as possible, so that I have been satisfied to leave these results of my labours to be worked out by the co-operation of the men of science to whom they may be of interest.
I cherish the hope that these volumes may tend to increase the public interest which is now so powerfully drawn to South Africa, and I trust that the time is not far distant when I may submit to the public some further researches relating to “the continent of the future.”