I have to acknowledge the obliging readiness of Lord Russell in lending me the drawings taken by the artist who was in the first instance attached to the Expedition. These sketches, with photographs by Charles Livingstone and Dr. Kirk, have materially assisted in the illustrations. I would also very sincerely thank my friends Professor Owen and Mr. Oswell for many valuable hints and other aid in the preparation of this volume. Newstead Abbey, April 16, 1865. THE ZAMBESI AND ITS TRIBUTARIES. INTRODUCTION. Objects of the Expedition--Personal Interest shown by Naval Authorities--Members of the Zambesi Expedition. When first I determined on publishing the narrative of my "Missionary Travels," I had a great misgiving as to whether the criticism my endeavours might provoke would be friendly or the reverse, more particularly as I felt that I had then been so long a sojourner in the wilderness, as to be quite a stranger to the British public. But I am now in this, my second essay at authorship, cheered by the conviction that very many readers, who are personally unknown to me, will receive this narrative with the kindly consideration and allowances of friends; and that many more, under the genial influences of an innate love of liberty, and of a desire to see the same social and religious blessings they themselves enjoy, disseminated throughout the world, will sympathize with me in the efforts by which I have striven, however imperfectly, to elevate the position and character of our fellow-men in Africa. This knowledge makes me doubly anxious to render my narrative acceptable to all my readers; but, in the absence of any excellence in literary composition, the natural consequence of my pursuits, I have to offer only a simple account of a mission which, with respect to the objects proposed to be thereby accomplished, formed a noble contrast to some of the earlier expeditions to Eastern Africa. I believe that the information it will give, respecting the people visited and the countries traversed, will not be materially gainsaid by any future commonplace traveller like myself, who may be blest with fair health and a gleam of sunshine in his breast. This account is written in the earnest hope that it may contribute to that information which will yet cause the great and fertile continent of Africa to be no longer kept wantonly sealed, but made available as the scene of European enterprise, and will enable its people to take a place among the nations of the earth, thus securing the happiness and prosperity of tribes now sunk in barbarism or debased by slavery; and, above all, I cherish the hope that it may lead to the introduction of the blessings of the Gospel.