...captured by the frigate St. Lawrence on the 16th of July, arrived at Philadelphia, Pa. She cleared from Boston, May 27, ostensibly for Turk's Island, but was then chartered by parties in New York for Beaufort, S. C. , with the intent to try the experiment of running the blockade.--N. Y. Evening Post, August 2. Scouts returned to Cairo, Ill., from the South, and reported that the rebels at New Madrid were we...