4 o6 MY LIFE 



made numerous extracts from the old voyagers on the parts 

 I myself was acquainted with. These added much to the 

 interest of my own accounts of the manners and character 

 of the people, and by means of a tolerably full journal and 

 the various papers I had written, I had no difficulty in going 

 steadily on with my work. As my publishers wished the 

 book to be well illustrated, I had to spend a good deal of 

 time in deciding on the plates and getting them drawn, either 

 from my own sketches, from photographs, or from actual 

 specimens, and having obtained the services of the best artists 

 and wood engravers then in London, the result was, on the 

 whole, satisfactory. I would particularly indicate the front- 

 ispiece by Wolf as a most artistic and spirited picture, while 

 the two plates of beetles by Robinson, the " twelve-wired " 

 and " king " birds of paradise by Keulemaus, and the head of 

 the black cockatoo by Wood, are admirable specimens of life- 

 like drawing and fine wood engraving. I was especially 

 indebted to Mr. T. Baines, the well-known African traveller, 

 and the first artist to depict the Victoria Falls and numerous 

 scenes of Kaffir life, for the skill with which he has infused 

 life and movement into an outline sketch of my own, of 

 " Dobbo in the Trading Season." 



The book was published in 1869, but during its progress, 

 and while it was slowly passing through the press, I wrote 

 several important papers, among which was one in the 

 Quarterly Review for April, 1889, on "Geological Climates 

 and the Origin of Species," which was in large part a review 

 and eulogy of Sir Charles Lyell's great work, " The Principles 

 of Geology," which greatly pleased him as well as Darwin. 

 A considerable part of this article was devoted to a discussion 

 of Mr. Croll's explanation of the glacial epoch, and, by a 

 combination of his views with those of Lyell on the great 

 effect of changed distribution of sea and land, or of differences 

 in altitude, I showed how we might arrive at a better explana- 

 tion than either view by itself could give us. As the article 

 was too long, a good deal of it had to be cut out, but it served 

 as the foundation for my more detailed examination of the 



