Two more attempts were made by the Confederates from Canada, one to burn New York City, and the other to wreck trains on the lake roads. The Confederate Commissioner, Thompson, received word in December that seven Southern generals were to be moved from Johnson’s Island to Fort Lafayette, New York. He detailed Beall and ten others to take the train and release them. They were to stop the train at a lonely place between Sandusky and Buffalo by putting rails across the track, and to secure the engineer and conductor. While Beall and a few men went to secure the money in the express safe of the train, others were to arm the generals and intimidate the passengers. The coaches were to be detached, the engine derailed, and then the Confederates were to take such money as they would need, get into sleighs, and scatter over Ohio and Pennsylvania, while the leaders drove to Buffalo and caught the train to Canada. The detectives discovered their plans, and Beall and his companion were arrested while they were asleep in an eating-room near the place of the proposed attack. When the others failed to find their leader, they hastened to escape to Canada. Beall was tried for this and other similar deeds, and for his capture of the _Philo Parsons_ and the _Island Queen_, and sentenced to be hanged for his conduct as a spy and for carrying on irregular and guerilla warfare against the United States. The Camp Douglas leaders were also tried by military courts. St. Leger Grenfell was sentenced to death, but this was commuted to imprisonment for life in Florida, from which he escaped three years later. The other leaders received sentences of imprisonment for terms of two, three, and five years. Camp Douglas had in 1865 nearly twelve thousand men in its barracks, but at the close of the war these were gradually sent to their homes, the property was sold, and the buildings torn down. CHAPTER XXV THREE GREAT INDUSTRIES OF THE LAKES No part of the story of the Great Lakes is more significant than the tale of the building up of the large enterprises that have made that region one of the leading centres of production and consumption in the United States and the world. The heroes of exploration and of adventure were the forerunners of commerce, and the founders of cities were the leaders of industry. Two of the three great industries of the early days have persisted to the present time; all three of them have contributed largely to exploration and occupation and deserve to be treated somewhat in detail.