The true national name is _Kazak_, "Riders," and as they were originally for the most part mounted marauders, or free lances of the steppe, the term came to be gradually applied to all nomad and other horsemen engaged in predatory warfare. It thus at an early date reached the South Russian steppe, where it was adopted in the form of _Kossack_ by the Russians themselves. It should be noted that the compound term Kirghiz-Kazak, introduced by the Russians to distinguish these nomads from their own Cossacks, is really a misnomer. The word "Kirghiz," whatever its origin, is never used by the Kazaks in reference to themselves, but only to their near relations, the Kirghiz, or Kara-Kirghiz[708], of the uplands. These highlanders, who roam the Tian-Shan and Pamir valleys, form two sections:--_On_, "Right," or East, and _Sol_, "Left," or West. They are the _Diko Kamennyi_, that is, "Wild Rock People," of the Russians, whence the expression "Block Kirghiz" still found in some English books of travel. But they call themselves simply Kirghiz, claiming descent from an original tribe of that name, itself sprung from a legendary Kirghiz-beg, from whom are also descended the Chiliks, Kitars and others, all now reunited with the Ons and the Sols. The Kazaks also are grouped in long-established and still jealously maintained sections--the _Great_, _Middle_, _Little_, and _Inner Horde_--whose joint domain extends from Lake Balkash round the north side of the Caspian down to the Lower Volga[709]. All accepted the teachings of Islam many centuries ago, but their Muhammadanism[710] is of a somewhat negative character, without mosques, mollahs, or fanaticism, and in practice not greatly to be distinguished from the old Siberian Shamanism. Kumiss, fermented mare's milk, their universal drink, as amongst the ancient Scythians, plays a large part in the life of these hospitable steppe nomads.