From the 5tth Regiment.Cam? Hamilton. (near | Fortress Monroe) Mar. 13. )Editor Mail:—The 58th Regiment is at last located in Sessia, upon the “sa-;red soil” of Virginia. It started from Philadelphia on the 8th, and seven companies went aboard the Erricson line of steamers, where they were compelled to remain until Sunday, the 9th. when at 5 A. M., we set sail down the Delaware, en route for Baltimore. At the wharf, before starting, we were entertained by the Union Relief Association, with all the eatables which empty stomachs could desire. This relief association is a magnificent institution. Its object is to feed every Union soldier which may be passing through or returning from the seat of war. It is entirely gratuitous and sustained by the voluntary contributions of the ladies of that noble city, and under their charge. They often times feed as high as three regiments per day; a committee is detailed every day to personally superintend the culinary arrangements and cheerfully and joyfully do they discharge the duties assigned them and they are from the first families of the city. In that city there are numerous other associations for the relief of Union soldiers controlled by the first men of the city. The contributions to these objects would astonish the back settlements. For instance, one individual will give a check for SI,000 for one object, $800 for another, and as much more for the third, all freely, given for the preservation of the Stars and Stripes.” With such prodig-ous energies on the part of the people, our Union is in no danger. The city of Philadelphia alone, can subdue the Car-nlinas, and New York, Philadelphia and Boston can conquer the entire Cotton States. You will pardon this digression.We had a beautiful passage down the Delaware, about forty miles, when directly opposite Fort Delaware, situate upon the Peapatch, we took the Delaware Chesa-peak Canal. Fort Delaware is the only Fort protecting Philadelphia. It is guarded by two artillery companies, and can throw a goodly number of shot and shell across the channel of the Delaware, quite enough to stop any fleet, provided as were our ships of war before the modern improvements, but with them the Delaware is defenseless. The Merrimac could go to Philapelphia and shell that city and destroy its entire shipping without the least hindrance from that fort oi any other which Uncle Sam has cvei constructed. From this point we madt the passage through the canal across tin State of Delaware into Elk river. Tin distance across this wonderful State ii sixteen miles, which will give you some idea of the magnitude of that State. A the breaking out of this Rebellion, it was represented by two of the most virulen secessionists to-wit: Senators Bayard ant Salsbury They tried to secede, but tin little State was loyal. Elk river sooi brqught us into the Chesapeake, a baj which has more navigable rivers putting into it from each side of it than any oth er upon this continent, and if settled b} our enterprising population would riva | New York as the commercial emporium but the blight of slavery is upon it, am its commerce is secondary and unimpor tantWe arrived at Baltimore about 9 o’clocl P. M., having been aboard some fort]hours; here we disembarked and marchei to a Union Relief Association for break fast This association is gotten up ii immitation of the Philadelphia one, witl this slight difference; the governmen pays the expenses thereof. We fomn the people of Baltimore very law abidinj but sour and sulky. Not a cheer greetei us and so far as I could discover, no even a joyous look was manifested. The’ had just got the news of the brilliann/tliini'Amonto f lm Q f It R’llWl