From Nyangwe the river flows due north 400 miles as far as Stanley Falls. The country between these two places is peopled by the cannibal Bakumu. With “these insensate furies of savageland” Stanley had many bloody encounters. “At every curve of this fearful river,” he writes in his now famous book, “the yells of the savages broke loud on our ears, the snake-like canoes dashed forward impetuously to the attack, while the drums and horns and shouts raised fierce and deafening uproar.” From Stanley Falls the river, flowing west and north-west, makes a huge curve, in the form of a horse-shoe, to Equateurville, where the junction of the Congo with the Ruki takes place. Throughout this immense curve, called the Middle Congo, and as far south as Leopoldville, a distance of 1068 miles, the river is navigable. In the contiguous territory live the Balolo, or “men of iron,” forgers of metal instruments. Famous as warriors, they are also noted as clever craftsmen, and are valuable allies of the State. From the junction of Lake Matumba with the Congo, the river, flowing south-west about 450 miles to Manyanga, forms the boundary between the French and the Belgian possessions. Thence down to Matadi it pursues a southerly course of about 100 miles through the territory of the State. From Matadi, whence it flows westward to the sea, it forms for 30 miles the northern boundary of the Portuguese Congo. [Illustration: Departure of Commissioner-General Halfeyt, on Board ss. “Stanley,” Stanleyville, 1899.] At Stanley Pool the Congo is no longer navigable. Here, gathering the full force of its waters, the now immense river ploughs its passage for over 200 miles through the Crystal Mountains, whence by a succession of plunges it bounds down to Matadi, 1800 feet below. From Matadi, unobstructed and triumphant, it hurls the overwhelming volume of its current far into the Atlantic. At its meeting with the sea, the Congo, now over 3000 miles in length, is fully twenty miles wide. Until a few years ago there was considerable controversy as to the true upper course of the Congo. This has been at last established by the explorations of Delcommune, Bia, and Brasseur; and it is now agreed that the upper course is that continuation of the Chambesi called the Luapula, and not the Lualaba, as was formerly believed. The Luapula, the boundary between the Congo State and North-Eastern Rhodesia, and navigable for 340 miles above Kassongo, is longer than the Lualaba. It is, however, inferior to the latter in size and in the number and importance of its affluents. The Lualaba rises in the southern part of the Congo territory, about fifty miles west of North-Western Rhodesia. The source of this river was discovered by Lieutenants Derscheid and Francqui.