The principal rivers falling into the Kouban are the Kara Kouban, the Ubin, the Aranos, the Laba, and the Urup; those which empty themselves into the Black Sea are the Sukhoi, the Mezi, near the Russian Fort Ghelendjik, the Toughe, the Soubachi, which divides Upper and Lower Abasia, the Kenehili, the Llhena, the Kodos, and the Salmache, which separates the country from Mingrelia. Numerous other streams and rivulets meander through the whole country, and fertilise every vale. At the time to which our story refers, the Russians had succeeded in erecting several forts in the boundaries of the country; those of Anapa and Ghelendjik on the coast, both built under the protection of a powerful army, aided by the guns from their ship. They have established also a line of fortified towns to the north of the Kouban, the principal of which are Ekatermodar, Labinskai, Stavrapol, Alexandrof, and Georgivesk, forming a road of communication from the Black Sea towards the Caspian, called the Valdi Caucasse. But even between these towns the Russians cannot move except with a strong escort, as otherwise they would run the greatest risk of being cut off by the mountaineers, who descending from their fastnesses, frequently make excursions far beyond them. There are also other forts of less importance, which will be mentioned in the course of our history. The origin of the Circassians, like that of all nations who have tradition alone to hand down their history, is clouded in obscurity. They themselves do not pretend to know from what race they are sprung, but it is certain that they are of very great antiquity, and have in all ages been celebrated for their bravery and other warlike qualities, their courtesy, and the surpassing beauty of their women. At one period they inhabited an extended tract of territory, comprising the Crimea, and all the country bordering on the Sea of Marmora and the Euxine; but the tribes dwelling in that country either became amalgamated with the Tartars, or were driven thence by the superior numbers of that people, as the pure stock is now only to be found among the mountains of the Caucasus, or in the plains immediately below them.