CHAPTER XIII: THE FRENCH CONVOY 

A report having arrived at the camp of the Count of Cifuentes that the peasants around Saragossa had risen in insurrection, Jack thought that he should be doing more good by discovering the truth of the rumor, and by keeping the earl informed of the state of things in the enemy's rear, than by remaining with the count. He hesitated whether he should take his two orderlies with him, but as they were well mounted he decided that they should accompany him, as they would add to his authority, and would, in case of need, enable him the better to assume the position of an officer riding in advance of a considerable force. 

After a hearty adieu from the Count of Cifuentes, he started soon after daybreak. After riding for some hours, just as he reached the top of a rise, up which he had walked his horse, one of the orderlies, who were riding a few paces behind him, rode up. 

"I think, Captain Stilwell," he said, "I hear the sound of firing. Brown thinks he hears it too." 

Jack reined in his horse. 

"I hear nothing," he said, after a pause of a minute. 

"I don't hear it now, sir," the man said. "I think it came down on a puff of wind.. If you wait a minute or two I think you will hear it." 

Jack waited another two minutes, and then was about to resume his journey, when suddenly a faint sound came upon the wind. 
How long did they pause before hearing it again?
two minutes