"Of the little army destined for the San Juan expedition after some delay at the mouth of the river, two hundred regulars, with ammunition and stores; proceeded up the river with the Indians, in their several crafts. It being now near the end of the dry season, the river contained very little water, and the shoals and sandy beaches rendered the passage difficult. The men were frequently obliged to quit their boats, and unite their strength in the water, to get them through some shallow channels. This labour continued for several days after they left the mouth of the river, till they arrived in deeper water; then, they made a quicker progress. However, they met with many obstacles, by currents, and occasional rapids or falls; which would have been insurmountable, but for the skill of the Indians in managing the boats on those occasions. "On the 9th of April, this advanced party arrived at a little island up the river, called St. Bartholomew; which they took, after receiving a few shot from the enemy, by which two men were wounded. "This island is situated about sixteen miles below San Juan castle; and was occupied by the Spaniards as a look-out, and defended by sixteen or eighteen men, in a small semicircular battery of nine or ten swivels. It was necessary for our purposes, as it commands the navigation of the river in a rapid and difficult part of it. "On the 11th of April, the troops arrived before the Castle of San Juan; and, on the 13th, the siege commenced. The ammunition and stores were landed two or three miles below the castle; and transported through the back woods, to the place where the attack began. San Juan castle is situated sixty-nine miles up the river, from the mouth, and thirty-two from the Lake of Nicaragua; and, is a navigation of nine days: but, for loaded boats, much longer, from the harbour up to it. The return from it, down by the current, is made in a day and a half. "On the 24th of April, the castle surrendered. During the siege, two or three more were killed, and nine or ten wounded.