Before the end of January, 1911, however, definite results had been obtained. Mr Maurice Farman, a brother of Mr Henry Farman, who had built an excellent biplane for military use, ascended at the aerodrome at Buc, and sent a wireless message back to the flying ground, when he was passing over the countryside quite ten miles away. This was a highly-important result, and promised to place the wireless outfit on a practical basis, so far as war purposes were concerned. Further tests were made at Buc, and the radius over which messages could be transmitted was soon increased from ten to fifteen miles. At this juncture, the French military authorities took the matter in hand with renewed vigour, and the energies of the scientific staff were directed towards still further increasing the transmitting power of the apparatus installed. An improved transmitting mechanism, weighing about 55 lb., was built and fitted to a biplane at the beginning of July, 1911; and Captain Brenot, a prominent French military airman, was given the task of thoroughly testing this device. He was able to do so with remarkable results. While flying between St Cyr and Rambouillet, he succeeded in getting into touch with the wireless installation fixed upon the Eiffel Tower in Paris. The distance was one of at least thirty-five miles. Captain Brenot did more, also, than transmit a mere series of dots and dashes. He spelt out a complete message while flying, and it was correctly received by an operator of the Eiffel Tower wireless station. This historic aerial message was as follows:— "Captain Brenot, conducting experiments in aeroplane with wireless telegraphy, to the Minister of War.—Flying between St Cyr and Rambouillet. We beg to present our sincere regards. We are above the forest of Rambouillet, at a height of 1640 feet." Nothing could have been more dramatic, in its way, than the receipt of this message in Paris from an aeroplane, fitted with wireless telegraphy, thirty miles away; it demonstrated, conclusively, that an aeroplane, when equipped in this way, was an absolutely-revolutionary weapon of warfare. Since then, French tests with wireless have been steadily going ahead, and improvements have been made. The results obtained are now more certain; and it has been proved, beyond doubt, that the wireless message from an air-scout will play a very prominent part in future military operations. III. Practical uses of wireless upon aeroplanes—England’s lack of effort.