The story of our submarine campaign in the Baltic is the first of two romances of the sea--one Northern and one Southern--the like of which is not to be found in the annals of the last 300 years. War must often make us familiar with obscure or long-forgotten places, the scenes of old voyages, and battles long ago; but to adventure with our submarines into the Baltic, or the Sea of Marmora, is to slip through unimagined dangers into a legendary world beyond all history--sailing the seas of the past, with the captains of the future. The exploration under water of those intricate and perilous channels was alone a discovery of supreme skill and daring; and the brilliant acts of war achieved by the adventurers form only a minor part of the glory of being there at all. The first of our submarine voyagers in the Baltic was Lieut.-Commander Max Horton, in E. 9. Before the War was a year old his fame had spread far and wide; but the details of his success are not even yet generally known, and cannot be given here. By October 6, 1914, he had sunk a German light cruiser and a destroyer, both in the ‘North Sea,’ and it may perhaps be guessed that he had, at any rate, thought of penetrating into the Baltic. By January, 1915, he was a full Commander, and had received the D.S.O. On the 29th of that month, he was not only in the Baltic, but was sinking a destroyer there; on May 11, he bagged a transport; and on June 5, he put to the credit of E. 9 another transport and another destroyer. Finally, on July 2, he torpedoed the _Pommern_, a 13,000-ton battle-ship of an older type, but armed with 11-inch guns. On July 29, he slipped again, in company with E. 1 (Commander N. F. Laurence), and after some independent hunting, the two boats both arrived at Reval. E. 9 had attacked a cruiser and a submarine; and, on August 18, had had a covetous look at a squadron of battle-cruisers, detailed for the German attack on the Gulf of Riga. But as they were moving constantly in regular formation, and at high speed over a large area, it was not possible to deal satisfactorily with them. E. 1, however, had had better luck. On August 19, Commander Laurence came to observation depth at 8.0 A.M., and under cover of a fog succeeded in stalking the same squadron. They were manœuvring in line abreast, and within ten minutes came across E. 1’s bows, with destroyers on both flanks. Commander Laurence had, of course, only a single ship to aim at--the battle-cruiser on the wing nearest to him, which was ascertained to have been the _Moltke_, a 22,600-ton ship. At 8.20, he fired his starboard torpedo, and at the same moment dived to avoid a destroyer which was coming straight for him. His luck was good, both ways. The torpedo got home on the battle-cruiser, and the destroyer missed E. 1 by a few feet. The next day he reported to the Russian Admiral at Reval.