The following article deals with magic medicines as used in Sukumaland, an area in Tanganyika Territory stretching from Lake Victoria approximately 120 miles to the south. The inhabitants, called by the collective name of Basukuma, are by far the biggest tribe in the territory. They are related very closely to the Banyamwezi in language and custom, and together these tribal groups comprise more than one-fifth of the territory's whole population of about 5½ millions. Because of their numerical strength alone, these related tribal groups have greatly influenced the medical and magical pseudo-science in many other areas.