Perhaps the most important accomplishment of the British flying men during July, 1915, as concerns actual fighting, was the destruction of three Taubes at the mouth of the Thames. The invaders were sighted while still at sea and the word wirelessed ahead. Four British machines mounted to give battle, and after a stirring contest above the city brought down two of the Taubes. They were hit in midair, and one of them caught fire. The burning machine dropping headlong to earth furnished a spectacle that the watchers are not likely to forget. The third Taube was winged after a long flight seaward and sank beneath the waves, carrying down both occupants. This contest took place July 20, 1915, and followed several visits to England by Zeppelins, none of which had important results. On July 21, 1915, French aviators made three conspicuous raids. A squadron of six machines descended upon Colmar in Alsace, dropping ninety-one shells upon the passenger and freight stations. Both broke into flames, and the former was almost wholly destroyed, tying up traffic on the line, the object of all attacks upon railroad stations, except at such times as troops were concentrated there or trains were standing on the tracks ready to load or unload soldiers. The second raid of this day was especially interesting, because a dirigible and not an aeroplane was employed, the French seldom using the big craft so much favored by the Germans. Vigneulles and the Hatton Chattel in the St. Mihiel salient were the objectives of the dirigible. A munition depot and the Vigneulles station were shelled successfully. The third air attack was made upon Challerange, near Vouziers, by four French aeroplanes. Forty-eight bombs were dropped on the station there, a junction point and one of the German lesser supply bases. The damage was reported to have halted reenforcements for a position near-by where the French took a trench section on this same day. Accepting the report as true, it exemplifies the unison of army units striving for the same purpose by remarkably different methods and weapons. The French kept busy during this month of July, 1915, with raids upon Metz and intermediate positions. Metz is the first objective of what the French hope will be a march to the Rhine, and since the start of the war the Germans there have had no rest. On July 28, 1915, Nancy was visited by a flock of Zeppelins and a number of bombs dropped which did considerable damage in that war-scarred city. Eleven or twelve persons were killed. During the night of July 29-30, 1915, a French aviator shelled a plant in Dornach, Alsace, where asphyxiating gas was being made. Several of his bombs went home and a tremendous explosion took place that almost wrecked the machine. But the driver returned safely. An air squadron also visited Freiburg, so often the target of airmen, and released bombs upon the railway station.