Braun also gave an interesting solution of the problem of directive telegraphy.'
A method of syntonic telegraphy proposed by A.
At this stage it may be convenient to outline the progress of electric wave telegraphy since 1899.
Marconi's success in bridging the English Channel at Easter in 1899 with electric waves and establishing practical wireless telegraphy between ships and the shore by this means drew public attention to the value of the new means of communication.
Fleming, The Principles of Electric Wave Telegraphy (London, 1906), chap. vii.; also Cantor Lectures on Hertzian wave telegraphy, Lecture iv., Journ.