...doubt teat the enemy are concentrating in heavy force, with a view to strike a blow at the main line of railway on nearing Richmond with the for South. It is stated that their forces at Newborn and Moore head City, on the coast, number from 50,000 to 70,000 and that they are evidently preparing for a forward movement. It is also represented that a powerful fleet is now in rendezvous at Morehead City, wi...