destroyed and the damage was put at $2 million. After the war it was discovered that the massive explosion thought to be an accident had actually been an act of sabotage by the Confederates. Confederate Secret Service agent John Maxwell had smuggled a time bomb aboard the ammunition barge. Maxwell used a clockwork mechanism to ignite 12 pounds of gunpowder packed into a box marked "candles." He called it his "horological torpedo." (Horological referring to time keeping; torpedo was a term used in the Civil War a wide variety of bombs and booby traps.) Here is a portion of Maxwell's report, taken from the Official Records. Sir: I have the honor to report that in obedience to your order, and with the means and equipment furnished me by you, I left this city on the 26th of July last, for the line of the James River, to operate with the Horological Torpedo against the enemy’s vessels navigating that river. I had with me Mr. R. K. Dillard, who was well acquainted with the localities, and whose service I engaged for the expedition. On arriving in Isle of Wright County, on the 2nd of August, we learned of immense supplies of stores being landed at City Point, and for the purpose, by stratagem, of introducing our machine upon the vessels there discharging stores, started for that point. We reached there before daybreak on the 9th of August last, with a small amount of provisions, having traveled mostly by night and crawled upon our knees to pass the East picket line. Requesting my companion to remain behind about half a mile, I approached cautiously the wharf with my machine and powder covered by a small box. Finding the captain had come ashore from a barge then at the wharf, I seized the occasion to hurry forward with my box. Being halted by one of the wharf sentinels, I succeeded in passing him by representing that captain had ordered me to convey the box on board. Hailing a man from the barge, I put the machine in motion and gave it in his charge. He carried it aboard. The magazine contained about twelve pounds of powder. Rejoining my companion, we retired to a safe distance to witness the effect of our effort. In about an hour the explosion occurred. Its effect was communicated to another barge beyond the one operated upon and also