In the 19th century , the `` powiat `` s continued to function in the part of Poland that had been incorporated into the Russian Empire ( `` Congress Poland '' ) -- the equivalent of the Russian '' `` uyezd '' and the Ukrainian `` povit '' -- and , in the German-governed Grand Duchy of Poznań , as the Polish equivalent of the German `` Kreis '' '' .
In the 19th century , the county continued to function in the part of Poland that had been incorporated into the Russian Empire ( `` Congress Poland '' ) , and as the Polish equivalent of the German `` Kreis '' in the German-governed Grand Duchy of Poznań .