x INROBUCTION. 



I return my thanks to the President (Sir E. I. Mur- 

 chison) and Council of the Eoyal Geographical Society, 

 for the kind interest which they have taken in this book : 

 especially for allowing me to quote Dr Livingstone's un- 

 published letters, addressed to Sir E. I. Murchison from 

 Africa during the progress of his journeys ; and for the 

 great favour shewn in granting copies of Mr Arrowsmith's 

 valuable map of the route across the continent, for this 

 publication. 



To Dr Norton Shaw, Secretary to the above Society, 

 I express my thanks both for the interest taken in, and 

 the information contributed for, this work. 



To the Eev. Professor Sedgwick I express my deep 

 obligations, for labouring so successfully beneath a weight 

 of years, and despite continued sickness, in writing the 

 accompanying prefatory letter, the completeness and value 

 of which can only really be appreciated by those persons 

 who have carefully studied the book of Travels. This 

 eloquent letter is a complete digest of the narrative of 

 the two great journeys ; it will be observed to contain a 

 few parallelisms with some passages in the lectures, life, 

 and appendix — resulting from writing entirely independ- 

 ently — but it is thought better to let them remain. 



To Dr Lee, of Hart well Park, Buckinghamshire ; and 

 to the Eev. Professor Browne, for revising the whole 

 proofs;— to the Eev. F. Gell, B.D. Fellow of Christ's Col- 

 lege, and other friends for reviewing the MSS. ; and to 

 the Secretaries of the Society for the Propagation of the 



