a circle in the Russian province of Esthonia, formerly called Jerwin. It extends in north latitude from 58° 35' to 59° 12', and in east longitude from 25° 4' to 26° 22', and comprehends 924 square miles, having one town, eight villages, and ninety-one hamlets, with 27,240 inhabitants. The soil is good, and especially near the rivers, where there is excellent pasture, for horned cattle. The capital is the town of the same name on the river Weissenstein. Long. 25. 27. E. Lat. 58. 51. 30. N.