Still advancing to the north we behold an immense snowy range. It is an impassable barrier; we deflect our march to the west, and find this Mtusi type numerous, and stretching up to the foot of the mountains, and to dense, impenetrable forests unfit for the herding of cattle; and at once the Caucasian type ceases, and the negroid features, either coppery, black, or mixed complexion--the flat nose, the sunken ridge, and the projecting of the lower part of the face--are dumb witnesses that here the wave of superior races was arrested. We retrace our steps, ascend to the upland and skirt the snowy range eastward, and over a splendid grazing country called Toro, Uhaiyana, and Unyoro, we see the fine-featured herdsmen again in numbers attending their vast herds, and the dark flat-nosed negroid tilling the land with hoes, as we saw them further south. After passing the snowy range on its northern extremity, we proceed west across the flat grassy valley of the Semliki to other grassy uplands parallel with Unyoro, but separated from it by the Albert Nyanza; and over this pastoral region are living together, but each strictly adhering to his own pursuit, the herdsmen and the tillers of the soil. During our travels from Usumbwa the herdsmen have changed their names from Watusi to Wanyambu, Wahuma, Waima, Wawitu, and Wachwezi. That is, they have accepted these titles in the main from the agricultural class, but whether in Ankori, or among the Balegga and Bavira, or dwelling with the Waganda or in Unyoro, they call themselves Watusi, Wahuma, or Wachwezi. In Karagwé, Ankori, or Usongora, they are the dominating classes. Their descendants sit in the seat of power in Ihangiro, Uhaiya, Uganda, and Unyoro; but the people of these countries are an admixture of the Zulu and West African tribes, and therefore they are more devoted to agriculture. When, as for instance, tribes such as Waganda, Wasoga, and Wakuri have been left to grow up and increase in power and prosperity, we have but to look at the sea-like expanse of the Victoria Nyanza, and we see the reason of it. No further progress was possible, and the wave of migration passed westward and eastward, and overlapped these tribes, and in their progress southward dropped a few members by the way, to become absorbed by the members of the agricultural class, and to lose their distinctive characteristics.