Foreign commerce is carried on chiefly through five ports, Buenaventura on the Pacific; on the Caribbean, Cartagena, Puerto Colombia, Santa Marta, and Riohacha. Besides these are Tumaco far south on the Pacific, and Villamizar in Santander on the river Zulia, near the boundary of Venezuela, well situated for trade with that neighboring country. =Puerto Colombia=, the chief seaport of the country, is situated a little west of the mouth of the Magdalena River. Although with a notable pier a mile in length, the place is small, merely a landing port for the greater city on the Magdalena, to which leads a railway 17¹⁄₂ miles long. =Barranquilla= is frequently mentioned as the port instead of Puerto Colombia, since it contains the national custom house through which at least 60 per cent of the commerce of the country passes. Yet it is not a real seaport, being 15 miles up the river, which is inaccessible to ocean steamers. When a channel is dredged through the Boca de Ceniza so that such steamers can reach Barranquilla, it will be of great advantage to commerce. This work, previously arranged for, but blocked by the outbreak of the European War, may soon be accomplished. It might have been better to make use of the “Dique,” a natural river channel 60 miles long extending from Calamar to the sea 15 miles south of Cartagena. This is now used in the rainy season by river steamers, though swamps near Cartagena present difficulties. Intended improvements in the channel from Sincerín, where there is a large sugar plantation and refinery, will make it navigable for boats of a few hundred tons. Beginning at the “Dique” rich agricultural land extends south. =Cartagena=, the port second in importance, has a fine natural harbor and excellent wharfage facilities; the custom house depots alongside are among the best in South America. It is less than 2000 miles to New York (4500 to Liverpool) and 266 from Colón. =Santa Marta=, northeast, is finely located on a good harbor. Like the ports already mentioned, it has weekly steamers to New York, New Orleans, and also to England. =Riohacha=, population 10,000, still farther east, is a poor port of much less importance. Merely an open roadstead, it is seldom visited by steamers but is frequented by sailing vessels from Curaçao and other points. =Buenaventura=, the chief Colombian port on the Pacific, with a population of 9000, is situated on an island in the Bay of the same name, which can accommodate vessels of 24 foot draft. A new pier, 679 feet long, just completed, has twin docks and two railway approaches; on one side water is 28-44 feet deep. The place is regularly visited by steamers and is an important port of entry for the rich Cauca Valley. =Tumaco=, farther south, a town of 15,000, is a port of some importance for southern Colombia, the bay receiving ships of 21 foot draft, which are served by lighters.