This is one of the most probable and luminous conjectures of the learned count de Buat, (Hist. des Peuples Barbares, tom. xi. p. 546 - 568.) The Tzechi and Serbi are found together near Mount Caucasus, in Illyricum, and on the lower Elbe. Even the wildest traditions of the Bohemians, etc., afford some color to his hypothesis.