Eventually Crichton was satisfied. They had some little difficulty in starting the engine. Altogether, scarcely half an hour passed since the monoplane alighted before it was once more in the air making great spirals as it climbed steeply into the clouds. Rupert scanned the moorlands surrounding the pool with his glasses. To his relief no human being was in sight. They had not been observed. Jim contrived to keep Cranmere Pool as the centre and avoided even sighting Okehampton Camp, nor was Princetown visible till they sailed swiftly over it—a mere speck thousands of feet below. It seemed only a few moments before the gleam of water and a pall of smoke showed Rupert that Plymouth was just ahead. * * * * * The monoplane began to descend in great spirals, till woods and houses were clearly visible. Jim did not approach the town, but circled round a large down. Now crowds of people could be seen running towards an open green space with a great white cross on it, directly below them. Rupert noticed that many were soldiers. More soldiers poured out of the line of huts to the south. The engine stopped. Now the cross was right ahead, and the ground appeared to Rupert to be rushing towards them. He clutched the supports on each side and realised they were falling at a frightful rate. Suddenly the engines started again—but only for a moment. Before he knew how it happened the monoplane was rushing along the ground with great leaps, till it stopped just beyond the canvas cross. In a moment a cordon of soldiers formed round the monoplane. Jim jumped from his seat and was shaking hands with a group of eager officers. Rupert also climbed down and was instantly surrounded by soldiers, who plied him with questions. Before he could reply Jim pushed through them. "Now, Jackson, don’t stand gossiping there! Take my suit-case down to the ’Duke of Cornwall’ at once. Ask for the rooms I’ve engaged. I shall want a bath and change immediately." "Yes, sir." And Rupert gave his best military salute. "Here, take that safety helmet off and put on your cap," Jim commanded, "or you’ll be mobbed outside.... Now, men, don’t interfere with him, he will be back in an hour. Just help to wheel the ’plane opposite the polo pavilion." Rupert, bag in hand, hurried to the gate, glad to escape further questions from his supposed comrades. At the gate he met a cavalcade, and had to stand aside to let it pass. Just as he was hurrying down the road again, he heard a horse behind him, and a voice hailed him. "Hi! You there! Why don’t you salute the General, eh? Here, sergeant, take this man’s name and regiment." And the young officer turned his horse and galloped after the General again. Rupert found himself confronted by a short, stout, red-faced man in a red tunic with three gold stripes on his arm. "Name and regiment?" he snapped.