"Can't sleep, boys?" he asked; "those flies are enough to drive one mad. You will get accustomed to them after a bit." "It is not exactly that, sir," Ned said, "but we wanted to speak to you. Dick and I have made up our minds to silence that battery. We have got sponges full of water, and we mean to go out and drown the priming. Then when we come back and tell Mr. Gubbins, I dare say he will take out a party, make a rush, and spike them." "Why, you must be mad to think of such a thing!" Mr. Johnson said in astonishment. "I think it is easy enough, sir," Ned replied; "at any rate, we mean to try." "I can't let you go without leave," Mr. Johnson said. "No, sir, and so we are not going to tell you we are going," Ned laughed. "What we want to ask you is to tell your men not to fire if they hear a noise close by in the next few minutes, and after that to listen for a whistle like this. If they hear that they are not to fire at any one approaching from the outside. Good-by, sir." And without waiting for Mr. Johnson to make up his mind whether or not his duty compelled him to arrest them, to prevent them from carrying out the mad scheme of which Ned had spoken, the Warreners glided off into the darkness. They had obtained a couple of native daggers, and took no other arms. They did not take off their boots, but wound round them numerous strips of blanket, so that they would tread noiselessly, and yet if obliged to run for it would avoid the risk of cutting their feet and disabling themselves in their flight. Then, making sure that by this time Mr. Johnson would have given orders to his men not to fire if they heard a noise close at hand, they went noiselessly to the breastwork which ran from the battery to the house, climbed over it, and dropped into the trench beyond. Standing on the battery close beside them, they saw against the sky the figure of Mr. Johnson. "Good-by, sir," Ned said softly; "we will be back in half an hour if we have luck." Then they picked their way carefully over the rough ground till they reached the lane, and then walked boldly but noiselessly forward, for they knew that for a little way there was no risk of meeting an enemy, and that in the darkness they were perfectly invisible to any native posted near the guns. After fifty yards' walking, they dropped on their hands and knees. Although the guns had been absolutely silent since their fire ceased at ten o'clock, a dropping musketry fire from the houses and walls on either side had, as usual, continued. This indicated to the boys pretty accurately the position of the guns. Crawling forward foot by foot, they reached the little ridge which sheltered the guns from the battery in Gubbins' garden.