Guinea (Africa), a portion of the west coast of Africa, the limits of which have never been precisely determined. Approximately, it may be said to extend from Cape Verga in lat. 10° 30' N. to Cape Negro in lat. 16° S. It is divided into Upper and Lower Guinea, on the northern and eastern sides of the Gulf of Guinea respectively. The former includes Sierra Leone, Liberia, the Ivory Coeist, the Gold Coast, the Slave Coast, and the Cameroons, the latter the Gaboon Colony, the Congo Free State. Angola, and Benguela. In the neighbourhood of the coast the climate is extremely unhealthy. owing to the shallow lagoons which are separated from the sea by narrow ridges of sand. Farther inland the surface rises through a series of gradually ascending plateaux to the level of the African table-land.