A couple of seaplanes on outpost duty were watching the waters below with great interest when one of them sighted a submarine travelling on the surface. They were up a good height, but the observers duly noted a couple of men on the conning-tower. Apparently the Germans were too intent on the business in hand to observe the sky-pilots, who kept on a steady course. They suffered a rude awakening a few minutes later. A weighty bomb fell plumb on the starboard side of the sea pest, midway between the conning-tower and the stern. That bomb ‘did its bit’ for King and Country. Slowly but surely the U-boat heeled over, ceased to make progress, and lay like a log on the water. Then the bow rose at an awkward angle, and the vessel began to settle rapidly. Another bomb, released by the second seaplane, burst close to the conning-tower, followed by a third bomb, “to make assurance doubly sure.” This particular submarine was not handed over to Sir Reginald Tyrwhitt. America did much excellent work in helping the British Navy to rid the seas of underwater pests. An ensign in the U.S. Naval Reserve attached to the Aviation Service was patrolling in a British seaplane with a British observer. Within thirty minutes of having started, “we sighted the periscope of a submarine directly in front of us,” he reports. “Immediately I opened the engine full out and attacked, dropping a bomb which landed a few feet ahead of the periscope and directly in line with it. A moment later a great quantity of air bubbles came to the surface. The water all about began to boil. I turned and attacked again. This time I dropped a bomb of twice the size. It landed nearly in the centre of the first disturbance. A mass of oil now appeared on the surface in addition to the _débris_ left by the bomb itself. The second disturbance continued for some time. Then I circled round for two hours before returning to warn merchant ships in the vicinity and inform a destroyer escorting a British submarine of what I had done and seen.” From his point of vantage the look-out of a British airship noticed a steamer limping along in a manner which distinctly suggested that she was in difficulties. That had been a fairly familiar sight since the opening of Germany’s illegal warfare. The cause of her crippled condition was evidently of enemy origin, though her assailant was invisible. Sea-wolves did not make a regular habit of gloating over their victims. That little hobby was only indulged in when the ‘coast’ was clear. The coxswain headed the airship in the direction of the stricken steamer, but before reaching her tugs had made their welcome appearance and lent the assistance of a stout steel hawser that worked wonders.