The weary firemen still at work in other quarters of the city were hastily summoned to combat the new danger. Hundreds of sailors from United States warships and hundreds of soldiers joined in the battle, and from midnight until dawn men fought fire as never fire had been fought before. Fire tugs drew up along the water front and threw immense streams of water on to the flames of burning factories, warehouses and sheds. Blocks of buildings were blown up with powder, guncotton, and dynamite, or torn down by men armed with axes and ropes. All night long the struggle continued. Mayor Schmitz and Chief of Police Dinan, although without sleep for forty-eight hours, remained on the scene all night to assist army and navy officers in directing the fight. At 7 o'clock Saturday morning, April 21, the battle was won. At that hour the fire was burning grain sheds on the water front about half a mile north of the Ferry station, but was confined to a comparatively small area, and with the work of the fireboats on the bay and the firemen on shore, who were using salt water pumped from the bay, prevented the flames from reaching the Ferry building and the docks in that immediate vicinity. On the north beach the fire did not reach that part of the water front lying west of the foot of Powell street. The fire on the water front was the only one burning. The entire western addition to the city lying west of Van Ness avenue, which escaped the sweep of flame on Friday, was absolutely safe. Forty carloads of supplies, which had been run upon the belt line tracks near one of the burned wharves, were destroyed during the night. A survey of the water front Saturday morning showed that everything except four docks had been swept clean from Fisherman's wharf, at the foot of Powell street, to a point around westerly, almost to the Ferry building. This means that nearly a mile of grain sheds, docks and wharves were added to the general destruction. In the section north of Market street the ruined district was practically bounded on the west by Van Ness avenue, although in many blocks the flames destroyed squares to the west of that thoroughfare. The Van Ness avenue burned line runs northerly to Greenwich street, which is a few blocks from the bay. Then the boundary was up over Telegraph Hill and down to that portion of the shore that faces Oakland. Practically everything included between Market, Van Ness avenue, Greenwich, and the bay was in ashes. On the east side of Hyde street hill the fire burned down to Bay street and Montgomery avenue and stopped at that intersection. Fort Mason was saved only by the most strenuous efforts of soldiers and firemen. It stands just north of the edge of the burned district, the flames having been checked only three blocks away at Greenwich street.