An item reported that according to an article of the former French minister of navy Lockroy in the newspaper Matin controlled balloons the best instrument to search for submarines while even the submarine dived deep she still could be seen from out of the air.(1)
Note
1. Édouard Lockroy (18 July 1838 Paris, France-22 November 1913 Paris, France), member of the Radical party, he was minister of marine in 1895-1899 and as vice president of the Chamber he criticized Camille Pelletan which was minister between 1902-1905.
