About midnight on Saturday, September 2nd, London airmen were warned that Zeppelins were on their way to the city. At once a number of them went up in the pitch-black darkness and circled round and round in search of the “terror that flieth by night,” Lieutenant Robinson was one of the number and all were keen to do something great for the honour of their corps. For the British airman does not work to win praise for himself, but to make a fine tradition for that branch of the military service to which he belongs. The airmen had been up for quite two hours flying about among the darting searchlights before the Zeppelins arrived. There were two of the airships at first and it was known at the time that others were on the way; but the rest did not appear for a reason which will be evident when this story has been told. The defenders of London relied upon three things: (1) the large number of anti-aircraft guns which had been placed on the high places round about the city; (2) the searchlights which gave the gunners their chance to aim properly; (3) the airmen who had learnt a great deal about this strange kind of fighting since Warneford brought down the airship in Belgium. The task of these airmen was a very difficult one and they were exposed to more dangers and risks than many people imagined. It was, in the first place, a severe trial of strength and nerve-power to remain in the air so long before the Zeppelins arrived. Then they were in danger from the guns of the airships which had often sent aeroplanes toppling nose foremost to the ground, while they usually carried only one machine-gun apiece, as well as a small supply of bombs. It was further necessary that an airman should rise to a very great height to get above a Zeppelin; for without getting some distance above it he could not make any use of his bombs at all. At this great height it is very cold even on a summer morning, and this increases the difficulty of the airman’s task. Moreover, it was a fight between the skill and endurance of one man against about twenty-eight, which was the usual number of a Zeppelin crew. Robinson was, however, equal to the task. He boldly attacked the first monster which came within his range, but had no success for several reasons. So he turned to the other, and by skilful management of his machine contrived to get above it in such a position that he could drop a bomb on the envelope. By this time many thousands of people were gathered together in the open spaces round about London; but the fight took place at such a great height that they only saw the effect of Robinson’s work. What they saw, however, was stirring and exciting enough. Suddenly a light appeared on the Zeppelin. At first some of the watchers thought it was the searchlight of the airship. But as they gazed they saw the light grow larger; and soon they were aware that the envelope of the ship was in flames.