They encamped for the night. The next morning it was found that Lieutenant Ridley’s engine would not work, and it was agreed that the other pilot should try to discover the track of the camel patrol. He left his water and provisions with the others, and arranged to return on the following day. The pilot picked up the camel patrol, but when he returned to find Lieutenant Ridley and Garside they had disappeared. Search parties, consisting of camel patrols, motor-cars, and aeroplanes were at once sent out. Nothing was discovered of the missing men until four days after the start of the original mission, when, twenty-five miles away from the spot where the first night had been spent, a second landing-place was found. The two men had evidently flown away again after patching up their machine. Two days later a motor party found the machine and the two dead bodies of the aviators. During the search the footprints of the two men had been discovered. They were noticed to have been overtaken by a hostile camel patrol, and for a time it was believed that Lieutenant Ridley and Garside had been captured. A diary kept by Garside throws peculiar light on the moving story: ‘_Friday._—Mr. Gardiner left for Meheriq, and said he would come and pick one of us up. After he went we tried to get the machine going, and succeeded in flying for about twenty-five minutes. Engine then gave out. We tinkered engine up again, succeeded in flying about five miles next day, but engine ran short of petrol. ‘_Sunday._—After trying to get engine started, but could not manage it owing to weakness, water running short—only half a bottle—Mr. Ridley suggested walking up to the hills. ‘_Six p.m._—Found it was further than we thought; got there eventually: very done up. No luck. Walked back; hardly any water, about a spoonful. Mr. Ridley shot himself at 10.30 on Sunday while my back was turned. No water all day; don’t know how to go on; dozed all day, feeling very weak; wish some one would come; cannot last much longer. ‘_Monday._—Thought of water in compass, got half bottle; seems to be some kind of spirit. Can last another day. Fired Lewis gun, about four rounds; shall fire my “Very light” to-day: last hope without machine comes. Could last days if had water.’ On the following day the bodies were discovered by a motor-car. The Commander of the Imperial Camel Corps reports that from what he discovered he has formed the opinion that Lieutenant Ridley gave his life in the hope of saving the mechanic. Added to this, the commanding officer of the Royal Flying Corps states: ‘There is no doubt in my mind that he did this in an act of self-sacrifice in the hope of saving the other man.’