“The same double-headed eagle, supporting the figure of a man or a god, is met with at Boghaz Keui, and must be regarded as one of the peculiarities of Hittite symbolism and art. The symbol was adopted in later days by the Turkoman princes, who had perhaps first seen it on the Hittite monuments of Kappodokia; and the Crusaders brought it to Europe with them in the 14th century. Here it became the emblem of the German Emperors, who have passed it on to the modern kingdoms of Russia and Austria. It is not the only heirloom of Hittite art which has descended to us of to-day.”