By the 12th of February, 1915, the German troops of the left wing, sweeping down from the north and pressing the Russians back from village to village, were entirely on Russian soil. Wizwiny, Kalwarja, and Mariampol were occupied on this day. The number of guns taken by these troops had been increased by seventeen, according to German reports. The German Headquarters Staff declared that by this time the Russian Seventy-third and Fifty-sixth Divisions had been as good as annihilated, and the Twenty-seventh division nearly destroyed. The Russians lying before the Angerapp line and the defenses of Loetzen had in the meantime also begun to retreat toward the east. German troops, consisting chiefly of reserves of the Landwehr and Landsturm which up to this time had been held back within the German fortified line, now advanced to attack the yielding army, whose long marching column could be observed by the German flyers. While General von Eichhorn's troops, coming from the neighborhood of Tilsit and making their way through snow and ice, were advancing upon Suwalki and Sejny, and the German right wing was fighting its way through Grajewo, toward Augustowo, the center of the troops of General von Buelow for several days fought the Russians in furious battle in the vicinity of Lyck. From all sides the Germans were closing in. To protect the withdrawal of this main army to Suwalki and Augustowo, the Russians endeavored by all means to hold the narrows of the lakes before Lyck, where they were favored by the nature of the ground and aided by strong defensive works, for the most part well provided with wire entanglements. The best of the Russian troops, Siberian regiments, here fought with great energy under a determined leadership, and the Russians, in fact, at some places took the offensive. By the 12th of February, 1915, however, the Germans had taken these positions and the Russians had withdrawn to the narrow passages among the lakes before Lyck. The battles around this town were carried on under the eye of the German Emperor. The German soldiers were still occupied in hunting through the houses for scattered Russians as the emperor stepped from his motor car. He was received with hurrahs, and the soldiers surrounded him, singing "Deutschland, Deutschland ueber Alles." The emperor, standing amid the blackened ruins of burned homes, delivered a short address to the soldiers gathered about him, giving special recognition to Infantry Regiment No. 33, an East Prussian unit which had especially distinguished itself and suffered great losses. On the same day the Germans advanced beyond Lyck, and by the 15th of February no Russian remained on German soil. CHAPTER L TIGHTENING OF THE NET--REPORT OF THE BOOTY