Together the two explorers now made their way to the coast and crossed to Aden, where Burton, still weak and ill, decided to remain for a little, while Speke took passage in a passing ship for home.
When he showed his map of Tanganyika and Victoria Nyanza to the President of the Royal Geographical Society in London, Sir Roderick Murchison was delighted.
"Speke, we must send you there again," he said enthusiastically.
And the expedition was regarded as "one of the most notable discoveries in the annals of African discovery."
CHAPTER LXIV
LIVINGSTONE TRACES LAKE SHIRWA AND NYASSA
Burton and Speke had not yet returned from central Africa, when Livingstone left England on another expedition into the interior, with orders "to extend the knowledge already attained of the geography of eastern and central Africa and to encourage trade." Leaving England on 10th March 1858, he reached the east coast the following May as British Consul of Quilimane, the region which lies about the mouth of the Zambesi. Livingstone had brought out with him a small steam-launch called by the natives the Ma-Robert after Mrs. Livingstone, the mother of Robert, their eldest child. In this little steam-launch he made his way up the Shire River, which flows into the Zambesi quite near its mouth. "The delight of threading out the meanderings of upwards of two hundred miles of a hitherto unexplored river must be felt to be appreciated," says Livingstone in his diary. At the end of this two hundred miles further progress became impossible because of rapids which no boat could pass. "These magnificent cataracts we called the Murchison Cataracts, after one whose name has already a world-wide fame," says Livingstone. Leaving their boat here, they started on foot for the Great Lake described by the natives. It took them a month of hard travelling to reach their goal. Their way lay over the native tracks which run as a network over this part of the world. "They are veritable footpaths, never over a foot in breadth, beaten as hard as adamant by centuries of native traffic. Like the roads of the old Romans, they run straight on over everything, ridge and mountain and valley."