Virginia had seceded on April 17 and immediately moved to secure under the resumption of her complete sovereignty all the arms, munitions of war, ship stores and military posts within her borders. Two posts of tremendous importance she attempted to seize at once--the great navy yard at Norfolk and the arsenal and shops at Harper's Ferry. The navy yard contained a magnificent dry dock worth millions, huge ship houses, supplies, ammunition, small arms and cannon, and had lying in its basin several vessels of war, complete and incomplete. Harper's Ferry contained ten thousand muskets, five thousand rifles and a complete set of machinery for the manufacture of arms capable of turning out two thousand muskets a month. A force of Virginia volunteers moved on Harper's Ferry. The small Federal garrison asked for a parley, which was granted. In a short time flames were pouring from the armory and arsenal. The garrison had set fire to the buildings and escaped across the railroad bridge into Maryland. The Virginia troops rushed into the burning buildings, and saved five thousand muskets and three thousand unfinished rifles. The garrison had laid trains of powder to blow up the workshops, but the Virginians extinguished the flames and saved to the South the invaluable machinery for making and repairing muskets and rifles. It was shipped to Fayetteville and Richmond and installed for safety. The destruction of the navy yard at Norfolk was more complete and irreparable. The dry dock was little damaged, but the destruction of stores and property was enormous. All ships in the harbor were set on fire and scuttled. Events moved now with swift and terrible certainty. Massachusetts attempted, on April 19, to send a regiment through the streets of Baltimore to invade the South, and the indignant wrath of her citizens could not be controlled by the mayor or police. The street cars on which they were riding across town to the Camden station were thrown from the tracks. The crowds jammed the streets and shouted their curses in the face of the advancing volunteers. Stones were hurled into their ranks and two soldiers dropped. A volley was poured into the crowd and several fell dead and wounded. The crowd went mad. Revolvers were drawn and fired point blank into the ranks of the soldiers and those who were unarmed rushed to arm themselves. From Frederic to Smith Streets the firing on both sides continued with the regular crash of battle. Citizens were falling, but even the unarmed men continued to press forward and hurl stones into the ranks of the New Englanders. The troops began to yield before the determined onslaughts of the infuriated crowds, bewildered and apparently without real commanders. They pressed through the streets, staggering, confused, breaking into a run and turning to fire on their assailants as they retreated.