"Quite so," I murmured, catching him gently by the arm. "And now come to the pub over the way and tell me all about it. The beer there is of a less vile brand than usual." "But I can't tell you anything, my dear chap, that you don't know already!" he expostulated. "I am quite prepared to gargle with you, but----" "Deux bieres, ma'm'selle, s'il vous plait." I piloted Petersen firmly to a little table. "Tell me all, my son!" I cried. "For the purposes of this meeting I know nix, and you as part hero in the affair have got to get it off your chest." He laughed, and lit a cigarette. "Not much of the heroic in my part of the stunt, I assure you. As you know, the show started from Dunkirk, where in due course Jim arrived, armed with credentials extracted only after great persuasion from sceptical officers of high rank. How he ever got there at all has always been a wonder to me: his Colonel was the least of his difficulties in that line. But Jim takes a bit of stopping. "My part of the show was to transport that scatter-brained idiot over the trenches and drop him behind the German lines. His idea was novel, I must admit, though at the time I thought he was mad, and for that matter I still think he's mad. Only a madman could have thought of it, only Jim Brent could have done it and not been killed. "From a height of three thousand feet, in the middle of the night, he proposed to bid me and the plane a tender farewell and descend to terra firma by means of a parachute." "Great Scot," I murmured. "Some idea." "As you say--some idea. The thing was to choose a suitable night. As Jim said, 'the slow descent of a disreputable Belgian peasant like an angel out of the skies will cause a flutter of excitement in the tender heart of the Hun if it is perceived. Therefore, it must be a dark and overcast night.' "At last, after a week, we got an ideal one. Jim arrayed himself in his togs, took his basket on his arm--you know he'd hidden the gun-cotton in a cheese--and we went round to the machine. By Jove! that chap's a marvel. Think of it, man." Petersen's face was full of enthusiastic admiration. "He'd never even been up in an aeroplane before, and yet the first time he does, it is with the full intention of trusting himself to an infernal parachute, a thing the thought of which gives me cold feet; moreover, of doing it in the dark from a height of three thousand odd feet behind the German lines with his pockets full of detonators and other abominations, and his cheese full of gun-cotton. Lord! he's a marvel. And I give you my word that of the two of us--though I've flown for over two years--I was the shaky one. He was absolutely cool; not the coolness of a man who is keeping himself under control, but just the normal coolness of a man who is doing his everyday job." Petersen finished his beer at a gulp, and we encored the dose.