a circle in the Russian province of Tambow, extending from north latitude 52.37. to 53.9. and in east longitude from 38.33. to 40.13. It contains 1210 square miles, and a population of 67,260 persons. It is chiefly watered by the Don, and is of somewhat more than moderate fertility. The capital is the city of the same name, 680 miles from Petersburg, situated on the river Don. It contains seven churches, 604 houses, and 3540 inhabitants. Long. 39.3. E. Lat. 53.5. N.