If one wished to depict the slave-trade in its most attractive, or rather least objectionable, form, he would accompany these gentlemen subjects of the Sultan of Zanzibar.

If he would describe the land traffic in its most disgusting phases he would follow the Kilwa traders along the road to Nyassa, or the Portuguese half-castes from Tette to the River Shire.
Keeping to the north of Nsama altogether, and moving westwards, our small party reached the north end of Moero on the 8th November last.

There the Lake is a goodly piece of water twelve or more miles broad, and flanked on the east and west by ranges of lofty tree-covered mountains.

The range on the west is the highest, and is part of the country called Rua-Moero; it gives off a river at its north-west end called Lualaba, and receives the River Kalongosi (pronounced by the Arabs Karungwesi) on the east near its middle, and the rivers Luapula and Rovukwe at its southern extremity.

The point of most interest in Lake Moero is that it forms one of a chain of lakes, connected by a river some 500 miles in length.