straight at a target before it can fire, and the Huns' straight-down dive was meant to catch the Trichords at a disadvantage, since it was hardly to be expected they could stand on their tails to shoot straight up in the air. But this is almost what they did. All three, going "full out," turned their noses abruptly up and opened fire. The Huns turned their dive off into an upward "zoom" and a circling bank which allowed their observers to point their guns over and down at the Trichords, and fire a number of rounds. But because it was now perfectly obvious that the Trichords had attained their first and most urgent object, the breaking-off of the Huns' "shoot" and spotting for their guns, they could now proceed to the next desirable part of the programme--the destruction of the four Huns by methods which would level up the fighting chances a little. The "Kangaroo" shot out eastward and began to climb steeply, Mel expecting that the other two would follow his tactics, get between the enemy and their lines, and climb to or above their height. But the "'Un-settler" was in trouble of some sort, and after firing a coloured light as a signal to the leader meaning "Out of action; am returning home," slid off west in a long glide with her engine shut off. Rip Winkle, on the "Minnenwerfer," followed the "Kangaroo" east a few hundred yards and began to climb. The four Huns at first tried to keep above the level of the two, but it was quickly evident that the Trichords were outclimbing them hand over fist, were going up in a most amazing lift, in "a spiral about as steep as a Tube stair." The Huns didn't like the look of things and suddenly turned for their lines, dropped their noses, and went off at full speed. The two Trichords cut slanting across to connect with them, and in half a minute were close enough to open fire. Two against four, they fought a fierce running fight for a minute or two. Then the "Kangaroo" swept in astern of a Hun, dived and zoomed up under him and poured in a point-blank burst of fire. Mel saw his bullets hailing into and splintering the woodwork of the underbody, was just in time to throttle down and check the "Kangaroo" as the Hun's tail flicked up and he went sweeping down in a spinning nose dive. But a hard-pressed pilot will sometimes adopt that manœuvre deliberately to throw a pursuer out of position, and, knowing this, Mel followed him down to make sure he was finished, followed him watching the spin grow wilder and wilder, and finish in a splintering crash on the ground. Mel lifted the "Kangaroo" and drove off full pelt after the others. Two of the Huns had dived and were skimming the ground--they were well over Hunland by now--and the other one and the "Minnenwerfer" were wheeling and circling and darting in and out about each other exactly like two boxers sparring for an opening, their machine-guns rattling rapidly as either pilot or gunner got his sights on the target. Then when he was