a circle of the Russian province of Riasan, extending from east longitude 38° 24' to 39° 4', and from north latitude 53° 52' to 54° 29'. It is very productive in corn, hemp, flax, and cattle. The capital is the city of the same name situated on the river Prona, and containing 408 houses and 2300 inhabitants. Long. 38° 42' E. Lat. 54° 12' N.