Both hit where they were aimed to hit. The first made very little noise, but threw up a large column of water and debris. The second did not appear to the eye to produce quite so good a burst; but the noise was louder, and the concussion felt in E. 35 was very powerful indeed, the whole boat shaking and a few lights going out momentarily. When the smoke and water column had cleared away, there was nothing to be seen but a quickly expanding calm area, like a wide lake of oil with wreckage floating in it, and three or four survivors clinging to some woodwork. E. 35, with her sub-lieutenant, her coxswain, and one able seaman on deck, and life-lines ready, went at once to their rescue; but a second U-boat made her appearance at that moment, and Lieutenant D’Oyly Hughes was obliged to dive at once. Three minutes afterwards, a torpedo passed him on the starboard side; but the new enemy was over two miles away, and though he reloaded his tubes and patrolled submerged on various courses, he never succeeded in picking her up in the periscope. She, also, had no doubt dived, and the two boats had scarcely more chance of coming to action than two men miles apart upon the Downs at midnight. In such a case, only a lucky chance could bring the duellists together; and even then successful shooting would be difficult. But a bold submarine commander, having once closed, would improvise a new form of attack rather than let a pirate go his way. E. 50 was commanded by an officer of this temper when she sighted an enemy submarine, during a patrol off the east coast. Both boats were submerged at the time; but they recognised each other’s nationality by the different appearance of their periscopes. The German had two--thin ones of a light-grey colour, and with an arched window at the top, peculiar to their Service. The British commander drove straight at the enemy at full speed, and reached her before she had time to get down to a depth of complete invisibility. E. 50 struck fair between the periscopes; her stem cut through the plates of the U-boat’s shell and remained embedded in her back. Then came a terrific fight, like the death grapple of two primeval monsters. The German’s only chance, in his wounded condition, was to come to the surface before he was drowned by leakage; he blew his ballast tanks and struggled almost to the surface, bringing E. 50 up with him. The English boat countered by flooding her main ballast tanks, and weighing her enemy down into the deep. This put the U-boat to the desperate necessity of freeing herself, leak or no leak. For a minute and a half she drew slowly aft, bumping E. 50’s sides as she did so; then her effort seemed to cease, and her periscopes and conning-towers showed on E. 50’s quarter. She was evidently filling fast; she had a list to starboard and was heavily down by the bows. As she sank, E. 50 took breath and looked to her own condition. She was apparently uninjured, but she had negative buoyancy and her forward