CHUVASHES, or TCHUVASHES  , a tribe found in eastern Russia . They form about one-fourth of the population of the government of Kazan, and live in scattered communities throughout the governments of Simbirsk, Samara, Saratov, Orenburg and Perm . They have been identified with the Burtasses of the Arab geographers, and many authorities think they are the descendants of the ancient Bolgars . In general they physically resemble the Finns, being round-headed, flat-featured and light-eyed, but they have been affected by long association with the Tatar element . In dress they are thoroughly Russianized, and they are nominally Christians, though they cling to many of the Old Shamanistic practices . They number some half a million . Their language belongs to the Tatar or Turkish group, but has been strongly influenced by the Finno-Ugrian idioms spoken round it . See Schott, De Lingua Tschuwaschorum (Berlin, 1841) . CIALDINI, ENRICO (1811-1892), Italian soldier, politician and diplomatist, was born at Castelvetro, in Modena, on the loth of August 181 r . In 1831 he took part ' in the insurrection at Modena, fleeing afterwards to Paris, whence he proceeded to Spain to fight against the Carlists . Returning to Italy in 1848, he commanded a regiment at the battle of Novara: In 1859 he organized the Alpine Brigade, fought at Palestro at the head of the 4th Division, and in the following year invaded the Marches, won the battle of Castelfidardo, took Ancona, and subsequently directed the siege of Gaeta . For these services he was created duke of Gaeta by the king, and was assigned a pension of xo,000 lire by parliament .

In 1861 his intervention envenomed the

Cavour-Garibaldi dispute, royal mediation alone preventing a duel between him and Garibaldi . Placed in command of the troops sent to oppose the Garibaldian expedition of 1862, he defeated Garibaldi at Aspromonte . Between 1862 and 1866 he held the position of lieutenant-royal at Naples, and in 1864 was created senator . On the outbreak of the war of 1866 he resumed command of an army corps, but dissensions between him and La Marmora prejudiced the issue of the campaign and contributed to the defeat of Custozza . After the war he refused the command of the General Staff, which he wished to render independent of the war office . In 1867 he attempted unsuccessfully to form a cabinet sufficiently strong to prevent the threatened Garibaldian incursion into the papal states, and two years later failed in a similar attempt, through disagreement with Lanza concerning the army estimates . On the 3rd of August 187o he pleaded in favour of Italian intervention in aid of France, a circumstance which enhanced his influence when in July 1876 he replaced Nigra as ambassador to the French Republic . This position he held until 1882, when he resigned on account of the publication by Mancini of a despatch in which he had complained of arrogant treatment by M . Waddington . He died at Leghorn, on the 8th of September 1892 . (H . W .