This point becomes more probable as we dwell upon the religious symbolism of the monument. As Professor Ramsay has shown, in the muscular toiling peasant-god who by his hoe and plough reclaims an arid waste and makes it bounteous, we have a conception of Hercules, and that he was the recognised chief deity of the district is evident from the name _Herakleia_ given by the Greeks to Eregli. Professor Frazer also has put it beyond doubt that the attributes of this Hercules are to be found in Sandon of Tarsus. Now the prototype of Sandon we shall find in the national Son-god (later Attis) portrayed in the sculpture gallery of Boghaz-Keui,[462] and in this way we are linked at once with the older Hittite mythology through the intermediary of the Cilician. IV THE NORTHERN CAPITAL A DESCRIPTION OF PTERIA, THE ANCIENT CITY AT BOGHAZ-KEUI, AND THE SCULPTURES CALLED IASILY KAYA. PART I. Fundamental though they are to our inquiry, the isolated monuments which have been reviewed in the preceding chapter illustrate only certain aspects of Hittite art, and disclose only incidentally a few details of features, dress, and armour, with some suggestion of religious observances and customs. Their disposition, it is true, helps us to determine the confines of the land we have set forth to examine; but their _provenance_ tells us little or nothing of where and how the people lived who fashioned them. Nevertheless, just as these were the first materials from which scholars have little by little created a science of Hittite studies, so we may employ them most fittingly as the criteria for our further investigation; that we may examine, with minds prepared, the more coherent evidences of the Hittite civilisation, as disclosed by the ruins of their cities and fortifications, their sanctuaries, and their palaces adorned with mystic sculptures.