Attempt to escape from prison.
--A conspiracy on the part of a number of the prisoners to escape from Castle Thunder was discovered on Wednesday night. The parties had made a long rope of cotton sheets and had gotten everything ready to let Rogers (who is condemned to be shot on Saturday) out of a window, when they were discovered, and put in the dungeon. One fellow, who proved very obstreperous, was undergoing the bucking process yesterday evening. It is not certainly known that Rogers initiated the movement, but it is believed that his friends in the prison did so to help him. --We learn that efforts are constantly being made to escape from this prison, and that it is only by unceasing vigilance that they are prevented. The next party discovered trying to get out are to be shot.
