The following account of the early relations between the countries east and west of the Halys is the result of a journey made from Smyrna by the Hermus valley, Doghanlu, Angora, Boghaz Keui, and Euyuk to Sivas (May 13 to June 29, 1881), on which Col. Sir Charles Wilson kindly invited me to accompany him. The Roman roads of the district were a frequent topic of conversation; and the knowledge of the routes, on which this article rests, has been gained from his skill. I afterwards found that the information I had thus acquired from Mm of the Roman roadsystem had an important bearing on the early history of these countries.