It was said that during the siege Richard and Philip obtained a great deal of information in respect to the plans of the Saracens through the instrumentality of some secret friend within the city, who contrived to find means of continually sending them important intelligence. This intelligence related sometimes to the designs of the garrison in respect to sorties that they were going to make, or to the secret plans that they had formed for procuring supplies of provisions or other succor; at other times they related to the movements and designs of Saladin, who was outside among the mountains, and especially to the attacks that he was contemplating on the allied camp. This intelligence was communicated in various ways. The principal method was to send a letter by means of an arrow. An arrow frequently came down in some part of the allied camp, which, on being examined, was found to have a letter wound about the shaft. The letter was addressed to Richard, and was, of course, immediately carried to his tent. It was always found to contain very important information in respect to the condition or plans of the besieged. If a sortie was intended from the city, it stated the time and the place, and detailed all the arrangements, thus enabling Richard to be on his guard. So, if the Saracens were projecting an attack on the lines from within, the whole plan of it was fully explained, and, of course, it would then be very easy for Richard to frustrate it. The writer of the letters said that he was a Christian, but would not say who he was, and the mystery was never explained. It is quite possible that there is very little truth in the whole story. At all events, though the assaults which the allies made against the walls and bulwarks of the town were none of them wholly successful, the general progress of the siege was altogether in their favor, and against the poor Saracens shut up within it. The last hope which they indulged was that some supplies would come to them by sea; but Richard's fleet, which remained at anchor off the town, blockaded the port so completely that there was no possibility that any thing could get in. The last lingering hope was, therefore, at length abandoned, and when the besieged found that they could endure their horrible misery no longer, they sent a flag of truce out to the camp of the besiegers, with a proposal to negotiate terms of surrender.