A pretext presented itself; some insult needed to be avenged, or some debt to be collected. Six battleships, fourteen cruisers, and eighteen transports sailed up the mouth of the river Hippopotamus. Six hundred canoes vainly opposed the landing of the troops. Admiral Vivier des Murenes' cannons produced an appalling effect upon the blacks, who replied to them with flights of arrows, but in spite of their fanatical courage they were entirely defeated. Popular enthusiasm was kindled by the newspapers which the financiers subsidised, and burst into a blaze. Some Socialists alone protested against this barbarous, doubtful, and dangerous enterprise. They were at once arrested.