BOLIVAR, a department of Colombia, on the Caribbean sea. It has an area of 23,515 sq.m., composed in great part of low, alluvial plains, densely wooded, slightly cultivated and unsuited for north European labour. The population, estimated in 1933 at 740,918, is composed largely of mixed races (white and negro) ; in some localities the inhabitants of mixed race are estimated to constitute four-fifths of the population. The capital, Cartagena on the Caribbean coast, was once the principal commercial entre pot of Colombia. Other important towns are Magangue, pop. (1918) 14,o76 and Mompox, pop. (1918) 15,435, on the Magda lena river, and Corozal, pop. (1918) 11,907 ; Sincelejo, pop. (about 14,000), and Lorica, pop. (1918) 19.955, near the western coast. The department has only one railway, the line from Cartagena to Calamar, 65m. in length, serving to connect the port of Cartagena with the Magdalena river.