RUSSIA.
Letters from Posen allude to an ukase which had appeared, compelling all individuals throughout Russia and Poland to sell to the government, within a specified period, whatever uncoined silver they might have in their possession. An indemnity in paper money was authorized to be given on behalf of the treasury. A body of Belgian weavers and dyers has been engaged to go to St. Petersburg to set up their trade. In Circassia the Russian army has met with a serious defeat; in a battle where it had 25,000 men engaged, it lost 5,000.