The well-known Circassian slave-trade is confined to the sale of females. In the eastern Caucasus girls are rarely bought and sold except in marriage; but in the western they are exported to supply the harems of the Turks, more especially those of Constantinople. At one time this trade was forbidden by Russia, and all of her subjects found engaged in it were sent to Siberia; but in 1845 it was again legalized on condition that the females to be exported into Turkey should take out letters of Russian protection, the object being partly to conciliate the Circassians, and partly to create a class of persons resident in the dominions of the sultan who should depend upon the czar as their protector and lord paramount. Even when prohibited, however, the traffic was carried on by means of small craft which under protection of Russian papers obtained at Trebizond under pretence of going to Kertsch for grain, braved the dangers of the winter voyage when from the inclemency of the weather the Russian cruisers had been withdrawn from the coast of Circassia, and taking in their precious cargo of souls landed it at Sinope or Samsoun. Thence conducted privately to Trebizond, they were finally conveyed by Turkish and Austrian steamers to Constantinople. These girls were the daughters of the serfs and poorer class of persons; those of nobles, chiefs, and men of means being rarely if ever sold to the slave-merchant. Sold they however must be even if they remain at home, the Asiatic doctrine prevailing in the Caucasus that the woman should be bought, not given in marriage, and where a dowry in addition to a wife would be the gilding of refined gold and adding sugar to the honey-comb. The married woman is the property of her lord--or was until nominally set free by the introduction of the law of the Koran. The idea of becoming the slave of a master was therefore nearly synonymous in the mind of a maid of low degree with that of becoming the wife of a husband; and to make the journey to Constantinople for the purpose of being bought by a wealthy Turk, was looked forward to by many a one as a settlement in life preferable to remaining at home the wife of a poor peasant. This sentiment was encouraged by the sight, not uncommon in Circassia, of females who after having obtained an education and a competency in Constantinople have returned to reside in their own country. It is also well known to the humblest maiden that the high officers in the Turkish state often take to themselves wives of the daughters of the Caucasus, who, if they do not return to the land of their fathers, at least play, in that of their adoption, a part in society superior to that of the wives of even chiefs and princes in the mountains.