Last years XIX centuries the considerable number of details had been added also a card of a valley of the Bottom Congo. In 1890 Bekker has made transition from the river Aruwimi to the river Uelle and liquidated a number of white stains in area dividing these two rivers. A.Delyjurt has defined position of some points across the Bottom Congo. Hodister has risen on the river Lomami and investigated area between it and Congo at Njangve; and Van-Zhel again has risen across Ubangi, has defined exact co-ordinates of its big northern bend and has almost reached that point where to it the Cadet has visited; the lacking link was doissledovano to the Physiognomy. In 189а SHtahe investigated area between Kasaj and Sankuru. In 1898 the Belgian expedition under the command of lieutenant Glori has risen on the river Elila running into Congo more low Njangve, and has crossed area in east direction almost to lake Kivu, than liquidated one more white stain on a card. By the end of century the general lines of system of Congo were already defined. In 1899 Voters has finished drawing up of a card of this part of Africa on the scale of one two-million, and in 1902 there was made Grenfellom a river Congo card. Though some rivers are represented till now by a dotted line and many insignificant districts in the sizes and until now remain not investigated, nevertheless new paramount opening in this part of Africa to expect difficultly.
