The Kabala-Albertville Railway is an important section of that great river and railroad route by which one can now cross the whole of equatorial Africa from Banana to Daressalaam, from the Atlantic Ocean to the Indian Ocean, without having to walk a single step. It is therefore a railway with a great future, which deserves to be studied from all points of view, and particularly with regard to the distribution of tsetse-flies, as the region traversed by this railway was ravaged a few years ago by sleeping sickness and the railway is probably destined in part for the transport of cattle.