So, giving by wireless the bearings of the daring submarine, von Loringhoven "carried on" in the knowledge that the dangers of this flight were by no means over. Already the wind was blowing with a velocity of thirty miles an hour--a rate that would make landing a difficult matter--and, what is more, its strength was hourly increasing. At ten in the morning the Zeppelin came in sight of the sheds at Kyritz, a town in the province of Brandenburg and roughly sixty miles north-west of Berlin. This was the base for airships that had sustained damage likely to take a considerable time to repair. The German authorities, profiting by the lessons of the British air raids on Friedrichshaven and other Zeppelin stations within range of aeroplanes operating either from the sea or from the hostile frontiers, had taken the precaution to remove the repair depots well inland. In such places as Borkum there were Zeppelins in commission ready for making flights to the British Isles, but at the first intimation of a raid upon the airship sheds the mammoth gas-bags would fly inland until the danger was past. In the case of a Zeppelin undergoing extensive repairs such a course would be impossible; hence the establishment of the base at Kyritz. Turning head to wind the crippled Zeppelin descended slowly and cautiously towards a field surrounding the three large sheds. The sheds themselves were marvels of scientific ingenuity. For one thing they were easily collapsible. By means of mechanical appliances the roof could be parted lengthways and each section allowed to fold against the walls. The walls could then be lowered until the whole structure lay flat on the ground. The fabric, composed of steel sheeting on girders of the same material, was covered with stucco that strongly resembled the surrounding ground. Viewed from a height there would be great difficulty in distinguishing between the collapsible sheds and the adjoining land. The buildings, of course, could only be lowered when not tenanted by airships, but such was the deliberate thoroughness of the Huns that they had to provide for this contingency in the possible yet improbable event of a British aircraft raid. Another feature of the sheds was the fact that each was built upon a gigantic turn-table, so as to enable the openings to turn away from the prevailing wind and thus facilitate landing operations; while by a system of disc signals the commander of the returning Zeppelin was informed of the direction and strength of the breeze. Yet, in spite of these precautions, the landing operations were fraught with danger, especially in the present case. As the crippled airship approached the shed, ropes were lowered from bow and stern. These were seized by swarms of trained air-mechanics, and as gently as possible the huge envelope was brought upon an even keel. All the while the propellers kept revolving in order to enable her to counteract the force of the head wind.