In the desert, on the other hand, there are no flies; the air is comparatively healthy; and, as the heat penetrates only a few inches into the ground, a cool bed can always be obtained after sunset by clearing away the hot sand from the surface. The moral outline of Africa is far more gloomy than the physical face of the country. The whole of the interior (as far as Europeans have been able to judge, or, rather, to conjecture, from their slight acquaintance with it) may be said to be one scene of incessant civil war. Of all the various tribes, nations, colours, and races of men who inhabit this immense country, there is not one which has not its enemy; and the universal creed of Africa seems to be, that the freedom and happiness of one tribe rest upon the slavery and misery of another. The Sultan of Mandara, on the marriage of his daughter, lately made an incursion into the Kerdy country: three thousand unfortunate wretches were thus dragged from their homes, and doomed to perpetual bondage. Across scorching deserts, in which not a living animal, or even an insect, exists, in various directions are seen one tribe of human beings driving another to slavery. The unfortunate captives, starting from their native seats in health, and, strange to say, even in spirits, gradually decline in both: their bodies become emaciated, their legs swell, and, as Denham says, "on approaching the wells, they run forward several miles like things distracted, their mouths open, and eyes starting from their heads." The water they seek is sometimes brackish, or the well itself is found to be dry; and around its exhausted source stand grouped this crowd of disappointed beings, surrounded by the countless skeletons of those whose captivity and troubles have alike ended on the same spot; who have perished from thirst and fatigue; and whose bones the hungry camels of the Cafila are oftentimes seen to chew. From the northern coast of Africa, where the Christian captive has so often ended his days in silent misery and anguish, down to the country of the Hottentots and Caffres, a space of about five thousand miles, and from the eastern mountains of Abyssinia to the waters of the great Western Ocean, a distance of nearly four thousand miles, we have every reason to believe that, throughout the whole of this immense region, the system of slavery more or less prevails. CHAPTER VII. A Short Description of Abyssinia.