Its waters are navigable for 140 miles, and it flows through the land of the Balolo. In proportion to its size it supplies more slaves than any other river. By looking on the map it will be seen that the Ikelemba, Ruki, and Lulungu run parallel to one another. The large slave-raiding tribes inhabit the land between these rivers, and bring their slaves to the nearest market, whether on the Ikelemba, Ruki, or Lulungu.
There are clearings at intervals all along the banks of the Ikelemba, where on certain days are held small local markets for the exchange of slaves. As one travels up stream small settlements are passed more and more frequently, and fifty miles from the mouth all the country on the left side of the river is thickly populated. It is noticeable that the villages are all on the left side of the river, the opposite side being infested by marauding and roving tribes who would raid any settlement made on their banks. All the slaves from this river are Balolo, a tribe which is easily recognizable by the exaggerated tattoo marked on the forehead, side of the temples, and chin.
During my ten-days' visit to this river I met dozens of canoes belonging to the country at the mouth of the Ruki River and the Bakuteé district, whose owners had come up and bought slaves, and were returning with their purchases. When traveling from place to place on the river the slaves are, for convenience, relieved of the weight of the heavy shackles. The traders always carry, hanging from the sheaths of their knives, light handcuffs, formed of cord and cane.
The slave when purchased is packed on the floor of the canoe in a crouching posture with his hands bound in front of him by means of these handcuffs. During the voyage he is carefully guarded by the crew of standing paddlers; and when the canoe is tied to the bank at
