The Doctor believes, as do the Arabs themselves, that about 400 people, mostly women and children, lost their lives, while many more were made slaves. This outrage is only one of many such he has unwillingly witnessed, and he is utterly unable to describe the feelings of loathing he feels for the inhuman perpetrators. Slaves from Manyuema command a higher price than those of any other country, because of their fine forms and general docility. The women, the Doctor said repeatedly, are remarkably pretty creatures, and have nothing, except the hair, in common with the negroes of the West Coast. They are of very light colour, have fine noses, well-cut and not over-full lips, while the prognathous jaw is uncommon. These women are eagerly sought after as wives by the half-castes of the East Coast, and even the pure Omani Arabs do not disdain to take them in marriage. To the north of Manyuema, Livingstone came to the light-complexioned race, of the colour of Portuguese, or our own Louisiana quadroons, who are very fine people, and singularly remarkable for commercial "'cuteness" and sagacity. The women are expert divers for oysters, which are found in great abundance in the Lualaba. Rua, at a place called Katanga, is rich in copper. The copper-mines of this place have been worked for ages. In the bed of a stream, gold has been found, washed down in pencil-shaped pieces or in particles as large as split peas. Two Arabs have gone thither to prospect for this metal; but, as they are ignorant of the art of gulch-mining, it is scarcely possible that they will succeed. From these highly important and interesting discoveries, Dr. Livingstone was turned back, when almost on the threshold of success, by the positive refusal of his men to accompany him further. They were afraid to go on unless accompanied by a large force of men; and, as these were not procurable in Manyuema, the Doctor reluctantly turned his face towards Ujiji. It was a long and weary road back. The journey had now no interest for him. He had travelled the road before when going westward, full of high hopes and aspirations, impatient to reach the goal which promised him rest from his labors--now, returning unsuccessful, baffled, and thwarted, when almost in sight of the end, and having to travel the same path back on foot, with disappointed expectations and defeated hopes preying on his mind, no wonder that the old brave spirit almost succumbed, and the strong constitution almost went to wreck.