Despatches from St. Petersburg, as also the St. Petersburg Gazette,
received to-day, mention a plot against the life of the Emperor of Rus- sia on the part of some Polish exiles who left Paris a short time ago, and bound themselves by an oath to effect this assassination. It was first made public by a journal, which gave an,account of the reception of a deputation which waited upon the Emperor in Finland to congra- tulate him on the frustration of the conspiracy. It seems that the Russian authorities did not wish the matter made public, but on this account appearing, deemed it right to allude to it in the Gazette. The sensation created throughout Russia is very great, and all sorts of pre- cautions are employed to protect the Emperor in his various visits to the frontier towns.—Globe.