Morgan, upon inspecting the works, was astonished at their strength and at his own victory. The main fort, or castle as it was called, was very strong, built of stone, and surrounded by a wide ditch twenty feet deep. Heavy guns commanded the port. There were other supporting batteries which mounted nearly sixty guns. An immense amount of ammunition, including thirty thousand pounds of powder, were found in the fort. These were all transferred on board the ships. The guns were spiked, the gun-carriages burned, and the pirates, with shouts of victory, again spread their sails. Among the prisoners there were three desperadoes, notorious robbers, who professed to be familiar with the route to Panama, and with all the region around. Eagerly they joined in the expedition with the promise of sharing in the spoil. Esquemeling, speaking of the proposition made to these wretches by Morgan, says: “These propositions pleased the banditti very well. They readily accepted his proffers, promising to serve him very faithfully; especially one of these three, who was the greatest rogue, thief, and assassin among them, and who deserved, for his crimes, to be broken alive upon the wheel. This wicked fellow had a great ascendency over the other two, and could domineer over them as he pleased, they not daring to refuse obedience to his orders.” The Isthmus of Panama was then celebrated for its gold and silver mines. It was the seat of a very extensive commerce, and was perhaps more strongly fortified and more populous than any other of the Spanish colonies. This narrow tongue of land, which separates the Atlantic and Pacific oceans, is about three hundred miles in length, and from thirty to forty in breadth. Chagres, on the Atlantic coast, was a very strongly fortified settlement at the mouth of the Chagres River. On the other side of the isthmus, on the Pacific shore, was Panama, a far more important place, abounding in wealth. Morgan’s plan was to capture Chagres; leave his fleet in the harbor there; ascend the river in his boats as far as the stream was navigable, and then to march to the doomed city. With his two thousand well-armed desperadoes he doubted not his ability to crush any force which might be brought against him. Morgan sent, in advance, four ships and a large boat to capture Chagres. The expedition was intrusted to the vice-admiral Bradley, the same one who had so successfully led the foraging party to Rancheria. He was a notorious buccaneer, renowned for his exploits. Three days’ sail brought his squadron to Chagres. Upon an eminence, commanding the entrance to the river, there was a strong fort, called Castle Lawrence. As Bradley approached the harbor, he unfurled at his mast-head the blood-red flag of the pirate. The garrison immediately displayed the royal banner of Spain, and foolishly saluted them with a volley of shot which did not reach their ships.