British inexorably blockaded the Germans upon their own neutral waters; and the cautious statecraft of Prussia proved as valueless to Germany as the obstinate, speculating warfare of Austria. [Alexander displeased.] There was, however, a Power which watched the advance of French dominion into Northern Germany with less complaisance than the Germans themselves. The Czar of Russia had gradually come to understand the part allotted to him by Bonaparte since the Peace of Lunéville, and was no longer inclined to serve as the instrument of French ambition. Bonaparte's occupation of Hanover changed the attitude of Alexander into one of coldness and distrust. Alexander saw and lamented the help which he himself had given to Bonaparte in Germany: events that now took place in France itself, as well as the progress of French intrigues in Turkey, [104] threw him into the arms of Bonaparte's enemies, and prepared the way for a new European coalition. [Bonaparte about to become Emperor.] [Murder of the Duke of Enghien, March 20, 1804.] The First Bonaparte Consul had determined to assume the dignity of Emperor. The renewal of war with England excited a new outburst of enthusiasm for his person; nothing was wanting to place the crown on his head but the discovery of a plot against his life. Such a plot had been long and carefully followed by the police. A Breton gentleman, Georges Cadoudal, had formed the design of attacking the First Consul in the streets of Paris in the midst of his guards. Cadoudal and his fellow-conspirators, including General Pichegru, were traced by the police from the coast of Normandy to Paris: an unsuccessful attempt was made to lure the Count of Artois, and other royal patrons of the conspiracy, from Great Britain. When all the conspirators who could be enticed to France were collected within the capital, the police, who had watched every stage of the movement, began to make arrests. Moreau, the last Republican soldier of France, was charged with complicity in the plot. Pichegru and Cadoudal were thrown into prison, there to await their doom; Moreau, who probably wished for the overthrow of the Consular Government, but had no part in the design against Bonaparte's life, [105] was kept under arrest and loaded with official calumny. One sacrifice more remained to be made, in place of the Bourbon d'Artois, who baffled the police of the First Consul beyond the seas. In the territory of Baden, twelve miles from the French frontier, there lived a prince of the exiled house, the Duke of Enghien, a soldier under the first Coalition against France, now a harmless dependent on the bounty of England. French spies surrounded him; his excursions into the mountains gave rise to a suspicion that he was concerned in Pichegru's plot. This was enough to mark him for destruction. Bonaparte gave orders that he should be seized, brought to Paris, and executed. On the 15th of March, 1804, a troop of