The problem of the relationship between Pygmies and Bushmen is not yet solved. The earlier investigators contented themselves with the methods of Physical Anthropology which have predominated over all others. Father Wilhelm Schmidt, using more especially arguments based on his studies of religious history, was the pioneer of the ethnological approach. The only student to make use of linguistic evidence was Father Schebesta, who tried to establish the unity of all African Pygmies and Bushmen by means of tribal names.