...unday, the Patrick Henry and Jamestown running the blockade at the mouth of James River, and taking part with the Merrimac. The Federal frigate St. Lawrence and Ericsson iron propeller came up from Old Point and engaged the Merrimac. A terrific battle ensued until two P. M. The Ericsson battered away at the Merrimac at only forty yards distance, for one hour, when the Ericsson made a plunge at the Me...