post, had been established as a “free” city at the eastern terminus of the Nicaraguan route through British influence and support. In 1851 Greytown levied tribute upon the steamers of the transit company. One of these refused to pay and was fired upon by a British man-of-war, the fiction of Greytown being a “free city” apparently went glimmering. The situation was critical and for some time looked as though a war might result. Meanwhile the Accessory Transit Company continued in a state of trouble with the Greytown government. So bad was it that the United States vessel _Cyane_ was called upon to protect the buildings of the Canal Company from destruction. Conditions remained strained, feelings ran high, until in 1854 one of the officers of a company steamer killed an individual and in a riot which followed the mob attacked the United States consul. Lieutenant Hollins, commanding officer of the Cyane, demanded reparation, and as this was not forthcoming he bombarded and destroyed the town. This accentuated the trouble between the United States and Great Britain but did not particularly enhance the building of the Nicaraguan canal. About this time Great Britain became involved in the Crimean War while in the United States the slavery question divided the country. Some hot-headed southerners wished forcibly to annex Nicaragua and filibusters actually joined in some of the “revolutions” which are almost always in progress in Central American States with the idea of extending slave territory.[55] Through one of these a man by the name of Walker had made himself head of Nicaragua and for two years remained a dictator. His rule was marked by severity and a series of acts that won him the enmity of the Central American States and also that of the Accessory Transit Company, whose charter and steamers he confiscated. He had secured the presidency and opened the state to slavery; he had also been able to get recognition at Washington. But another revolution broke out and he was driven out in 1857. The action of Walker had destroyed American influence in Central America. In the United States opinion was divided. Slavery enthusiasts openly advocated control of any transit route across the isthmus and that “no power on earth should be suffered to impede.”[56] This and numerous other troubles which followed, off and on intermittently, delayed and prevented canal construction.