KOSLOW, a city of the Russian province of Taurien, the capital of a circle of the same name. It stands at the bottom of a deep bay on the Black Sea. It has been declared a free port ever since 1798, and has a quarantine station. Large quantities of produce are shipped from it, consisting of wheat, salt, iron, wool, linen, leather, horses' tails and hair, hides, and tallow. It contains 928 houses, and, according to Pallas, 11,500 inhabitants. It is considered to be unhealthy, and the water is not very good. Long. 33. 20. E. Lat. 45. 15. N.