resigned, being unable to agree with his colleague Licinius
Crassus. Although not a man of great abilities, Catulus exercised
considerable influence through his political consistency and his
undoubted solicitude for the welfare of the state.

See Sallust, _Catilina_, 35. 49; Dio Cassius xxxvi. 13; Plutarch,
_Crassus_; Suetonius, _Caesar_, 15.

CAUB, or KAUB, a town of Germany, in the Prussian province of
Hesse-Nassau, on the right bank of the Rhine, 28 m. N.W. from Wiesbaden,
on the railway from Frankfort-on-Main to Cologne. Pop. 2200. It has a
Roman Catholic and an Evangelical church, and a statue of Blucher. The
trade mainly consists of the wines of the district. On a crag above the
town stands the imposing ruin of Gutenfels, and facing it, on a rock in
the middle of the Rhine, the small castle Pfalz, or Pfalzgrafenstein,
where, according to legend, the Palatine countesses awaited their
confinement, but which in reality served as a toll-gate for merchandise
on the Rhine.

Caub, first mentioned in the year 983, originally belonged to the lords
of Falkenstein, passed in 1277 to the Rhenish Palatinate, and attained
civic rights in 1324. Here Blucher crossed the Rhine with the Prussian
and Russian armies, on New Year's night 1813-1814, in pursuit of the
French.

CAUCA, a large coast department of Colombia, South America, lying
between the departments of Bolivar, Antioquia, Caldas and Tolima on the
E., and the Pacific Ocean and Panama on the W., and extending from the
Caribbean Sea S. to the department of Narino. Pop. (1905, estimate)
400,000; area 26,930 sq. m. Although Cauca was deprived of extensive
territories on the upper Caqueta and Putumayo, and of a large area
bordering on Ecuador in the territorial redistribution of 1905, it
remained the largest department of the republic. The Western Cordillera,
traversing nearly its whole length from south to north, and the Central
Cordillera, forming a part of its eastern frontier, give a very
mountainous character to the region. It includes, besides, the fertile
and healthful valley of the upper Cauca, the hot, low valley of the
Atrato, and a long coastal plain on the Pacific. The region is rich in
mines and valuable forests, but its inhabitants have made very little
progress in agriculture because there are not adequate transportation
facilities. The capital of the department is Popayan at its southern
extremity, with an estimated population in 1905 of 10,