KALKAS, or KHALKAS, a Mongoloid people mainly concentrated in the northern steppes of Mongolia near their kinsmen, the Buriats. According to Sir H. Howorth they derive their name from the river Kalka, which runs into the Buir lake. Of all Mongolians they physically differ most from the true Mongol type (see MONGOLS). Their colour is a brown rather than a yellow, and their eyes are open and not oblique. They have, however, the broad flat face, high cheekbones and lank black hair of their race. They number some 250,000, and their territory is divided into the four khanates of Tushetu (Tushiyetu), Tsetien (Setzen), Sai'noi'm (Sain Noyan) and Jesaktu (Jassaktu). KALKBRENNER, FRIEDRICH WILHELM (1784-1849), German pianist and composer, son of Christian Kalkbrenner (1755-1806), a Jewish musician of Cassel, was educated at the Paris Conservatoire, and soon began to play in public. From 1814 to 1823 he was well known as a brilliant performer and a successful teacher in London, and then settled in Paris, dying at Enghien, near there, in 1849. He became a member of the Paris piano-manufacturing firm of Pleyel & Co., and made a fortune by his business and his art combined. His numerous compositions are less remembered now than his instruction-book, with "studies," which have had considerable vogue among pianists. KALLAY, BENJAMIN VON (1839-1903), Austro-Hungarian statesman, was born at Budapest on the 22nd of December 1839. His family derived their name from their estates at Nagy Kallo, in Szabolcs, and claimed descent from the Balogh Semjen tribe, which colonized the counties of Borsod, Szabolcs, and Szatmar, at the close of the 9th century, when the Magyars conquered Hungary. They played a prominent part in Hungarian history as early as the reign of Koloman (1095-1114); and from King Matthias Corvinus (1458-1490) they received their estates at Mezo Tur, near Kecskemet, granted to Michael Kallay for his heroic defence of Jajce in Bosnia, and still held by his descendants. The father of Benjamin von Kallay, a superior official of the Hungarian Government, died in 1845, and his widow, who survived until 1903, devoted herself to the education of her son. At an early age Kallay manifested a deep interest in politics, and especially in the Eastern Question. He travelled in Russia, European Turkey and Asia Minor, gaining a thorough knowledge of Greek, Turkish and several Slavonic languages. He became as proficient in Servian as in his native tongue. In 1867 he entered the Hungarian Diet as Conservative deputy for Muhlbach (Szasy-Szebes); in 1869 he was appointed consul-general at Belgrade; and in 1872 he visited Bosnia for the first time. His views on Balkan questions strongly influenced Count Andrassy, the Austro-Hungarian minister for foreign affairs. Leaving Belgrade in 1875, he resumed his seat in the Diet, and shortly afterwards founded the journal _Kelet Nepe_, or _Eastern Folk_, in which he defended the vigorous policy of Andrassy.