Page 320, The homeward march ...: the reason for the small capitals is not clear.

Page 343-344, There seem to have been ...: as printed in the source document.

Page 427, ipomæa: probably an error for ipomœa.

Changes made:

Illustrations have been moved outside text paragraphs.

Some minor obvious typographical and punctuation errors have bee corrected silently.

Page x: KISERI changed to KISERA as elsewhere

Page xvii-xx: Illustration numbers (in the order in which they occur in the text) have been added to the list of illustrations

Page xix: Entry Rapids of the Livingstone River inserted

Page 62: Backwains changed to Bakwains